fix(web): logs scroll jump, dashboard tab-rename width, and banner usage (#13858)

Three unrelated UI fixes.

### `fix: logs page wrap scroll`
The Logs view delegates its scroll element to a container that also
holds the histogram. TanStack Virtual compensates `scrollTop` whenever a
measured row differs from its estimate — correct for a self-contained
list, wrong for a shared scroller. With wrap on, rows were remeasured on
every query refresh and the deltas pushed the whole page downward.

Adds `preserveScrollOffsetOnRowResize` to `useTableVirtualization`,
which pins `shouldAdjustScrollPositionOnItemSizeChange` to `() =>
false`. `OTable` opts in only when it has both a delegated `scrollEl`
and dynamic row height, so self-contained tables keep the existing
behaviour.

### `fix: dashboard tab rename size issue`
The rename input's auto-sizer grid track was `minmax(0, max-content)`.
Once the tab strip overflowed, the `0` minimum collapsed the track to
`0px` and the input vanished. Now a bare `max-content`.

### `fix: ingestion and webinar obanner usage`
Replaces two hand-rolled banner `div`s (`Ingestion.vue`,
`WebinarBanner.vue`) with `OBanner`. To make that possible without
appearance overrides, `OBanner` gains:
- a `promo` variant (the existing marketing gold, so the standalone
webinar bar still matches);
- `center`, which groups message and actions in the middle of a bar
instead of stranding the action at the far edge;
- a `role` override, for a bar that is page furniture rather than a
notification;
- `dense` now actually applies in `bar` mode (`py-1` vs `py-2`).

### Tests
`TabList.spec.ts` and `OTable.wrapMeasure.spec.ts` updated alongside.

web/src/components/WebinarBanner.vue

@@ -16,16 +16,17 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 <template>
   <!-- Header variant: w-full top bar above the toolbar -->
-  <div
+  <OBanner
     v-if="webinarData && !isExpired && !isDismissed && variant === 'header'"
-    class="webinar-top-bar bg-promo-webinar-accent text-promo-webinar-text w-full"
-    data-test="webinar-header-banner"
+    bar
+    dense
+    center
+    variant="promo"
     role="banner"
+    data-test="webinar-header-banner"
   >
-    <div
-      class="webinar-top-bar-content relative flex flex-wrap items-center justify-center gap-2 px-4 py-[0.2rem]"
-    >
-      <span class="webinar-top-bar-text text-compact text-promo-webinar-text text-center font-bold">
+    <div class="flex flex-wrap items-center justify-center gap-2">
+      <span class="webinar-top-bar-text text-center font-bold">
         <strong>{{ webinarData.tag }}:</strong> {{ webinarData.title }}
         <span v-if="webinarData.date" class="webinar-top-bar-date font-medium">
           {{ formattedDate }}
@@ -37,7 +38,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
         :href="webinarData.primaryButton.link"
         target="_blank"
         rel="noopener noreferrer"
-        class="webinar-top-bar-link text-compact text-promo-webinar-link hover:text-promo-webinar-link-hover font-bold whitespace-nowrap underline"
+        class="webinar-top-bar-link text-promo-webinar-link hover:text-promo-webinar-link-hover font-bold whitespace-nowrap underline"
         data-test="webinar-top-bar-register-link"
       >
         {{ webinarData.primaryButton.text }}
@@ -58,7 +59,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
         {{ t("components.webinarBanner.dismiss") }}
       </OButton>
     </div>
-  </div>
+  </OBanner>
 
   <!-- Home variant: larger banner -->
   <div
@@ -128,6 +129,7 @@ import { ref, computed, onMounted, watch } from "vue";
 import { useStore } from "vuex";
 import OButton from "@/lib/core/Button/OButton.vue";
 import OIcon from "@/lib/core/Icon/OIcon.vue";
+import OBanner from "@/lib/feedback/Banner/OBanner.vue";
 import { useI18nTyped, type I18nText } from "@/types/i18n";
 
 const store = useStore();

web/src/components/dashboards/tabs/TabList.spec.ts

@@ -739,6 +739,21 @@ describe("TabList", () => {
       expect(wrapper.vm.editingTabId).toBe("tab2");
     });
 
+    // A 0 min track (`minmax(0,max-content)`) lets the editing tab shrink to 0px
+    // once the strip overflows, hiding the input. jsdom has no layout engine, so
+    // assert the declaration rather than the width.
+    it("should size the rename field with a max-content track that cannot collapse", async () => {
+      wrapper = createWrapper();
+
+      wrapper.vm.startRename({ tabId: "tab2", name: "Second Tab" });
+      await flushPromises();
+
+      const grid = wrapper.find('[data-test="dashboard-tab-tab2-rename-input"]').element
+        .parentElement as HTMLElement;
+      expect(grid.className).toContain("grid-cols-[max-content]");
+      expect(grid.className).not.toContain("minmax(0");
+    });
+
     it("should persist a changed name via editTab and emit refresh", async () => {
       wrapper = createWrapper();
 

web/src/components/dashboards/tabs/TabList.vue

@@ -46,11 +46,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
           <!-- Auto-size the input to its text via an invisible sizer sharing the
                input's grid cell, so the field is exactly as wide as the name.
                `size="1"` neutralises the input's default ~20ch intrinsic width so
-               the sizer alone drives the max-content column. -->
-          <span
-            v-if="editingTabId === tab.tabId"
-            class="grid grid-cols-[minmax(0,max-content)] items-center"
-          >
+               the sizer alone drives the max-content column. Keep that track a bare
+               `max-content`: a 0 min (`minmax(0,…)`) collapses it to 0px once the
+               tab strip overflows. -->
+          <span v-if="editingTabId === tab.tabId" class="grid grid-cols-[max-content] items-center">
             <span
               aria-hidden="true"
               class="invisible col-start-1 row-start-1 px-0.5 text-sm whitespace-pre"

web/src/lib/core/Table/OTable.vue

@@ -588,6 +588,10 @@ const {
   rowHeight: props.rowHeight ?? (props.dense ? 38 : 54),
   overscan: props.overscan ?? 100,
   dynamicRowHeight: () => useDynamicRowHeight.value,
+  // A delegated scroller can contain a histogram or other content before this
+  // table. Keep its raw offset stable when wrapped rows are remeasured so a
+  // query refresh cannot move the owning page's scrollbar.
+  preserveScrollOffsetOnRowResize: () => !!props.scrollEl && useDynamicRowHeight.value,
 });
 
 const isVirtual = computed(() => props.virtualScroll && displayRows.value.length > 0);

web/src/lib/core/Table/OTable.wrapMeasure.spec.ts

@@ -14,24 +14,26 @@ beforeAll(() => {
 // measurement wiring never renders — stub it with a fixed window of rows.
 const measureSpy = vi.fn();
 const measureElementSpy = vi.fn();
+const virtualizerMock = {
+  getVirtualItems: () =>
+    Array.from({ length: 5 }, (_, i) => ({
+      index: i,
+      key: i,
+      start: i * 20,
+      end: (i + 1) * 20,
+      size: 20,
+      lane: 0,
+    })),
+  getTotalSize: () => 100,
+  measure: measureSpy,
+  measureElement: measureElementSpy,
+  scrollToIndex: vi.fn(),
+  shouldAdjustScrollPositionOnItemSizeChange: undefined as
+    ((...args: any[]) => boolean) | undefined,
+};
 
 vi.mock("@tanstack/vue-virtual", () => ({
-  useVirtualizer: () =>
-    ref({
-      getVirtualItems: () =>
-        Array.from({ length: 5 }, (_, i) => ({
-          index: i,
-          key: i,
-          start: i * 20,
-          end: (i + 1) * 20,
-          size: 20,
-          lane: 0,
-        })),
-      getTotalSize: () => 100,
-      measure: measureSpy,
-      measureElement: measureElementSpy,
-      scrollToIndex: vi.fn(),
-    }),
+  useVirtualizer: () => ref(virtualizerMock),
 }));
 
 import OTable from "./OTable.vue";
@@ -69,6 +71,7 @@ describe("OTable virtual measurement", () => {
   beforeEach(() => {
     measureSpy.mockClear();
     measureElementSpy.mockClear();
+    virtualizerMock.shouldAdjustScrollPositionOnItemSizeChange = undefined;
   });
 
   afterEach(() => {
@@ -103,4 +106,23 @@ describe("OTable virtual measurement", () => {
     wrapper = mountTable({ wrap: false, expansion: "none" });
     expect(measureSpy).not.toHaveBeenCalled();
   });
+
+  it("should keep a delegated scroller stable after wrap is enabled", async () => {
+    wrapper = mountTable({
+      wrap: false,
+      scrollEl: document.createElement("div"),
+    });
+    expect(virtualizerMock.shouldAdjustScrollPositionOnItemSizeChange).toBeUndefined();
+
+    await wrapper.setProps({ wrap: true });
+
+    const shouldAdjust = virtualizerMock.shouldAdjustScrollPositionOnItemSizeChange;
+    expect(shouldAdjust).toBeTypeOf("function");
+    expect(shouldAdjust?.()).toBe(false);
+  });
+
+  it("should retain the virtualizer's default anchoring for an internal scroller", () => {
+    wrapper = mountTable({ wrap: true });
+    expect(virtualizerMock.shouldAdjustScrollPositionOnItemSizeChange).toBeUndefined();
+  });
 });

web/src/lib/core/Table/composables/useTableVirtualization.ts

@@ -1,6 +1,6 @@
 // Copyright 2026 OpenObserve Inc.
 
-import { computed, toValue, type Ref, type MaybeRefOrGetter } from "vue";
+import { computed, toValue, watchEffect, type Ref, type MaybeRefOrGetter } from "vue";
 import { useVirtualizer } from "@tanstack/vue-virtual";
 import type { Row } from "@tanstack/vue-table";
 
@@ -25,6 +25,13 @@ export interface VirtualizationOptions {
    * reactive `wrap` state.
    */
   dynamicRowHeight?: MaybeRefOrGetter<boolean>;
+  /**
+   * Keep the scroll element's raw offset stable while measured row heights
+   * change. Delegated tables need this because their scroll element can also
+   * contain content above the virtual list; applying the list's measurement
+   * deltas to that shared element makes it jump during result refreshes.
+   */
+  preserveScrollOffsetOnRowResize?: MaybeRefOrGetter<boolean>;
 }
 
 /**
@@ -42,6 +49,7 @@ export function useTableVirtualization(options: VirtualizationOptions) {
     expandedRowHeights,
     overscan = 100,
     dynamicRowHeight,
+    preserveScrollOffsetOnRowResize,
   } = options;
 
   const isFirefox = computed(() => {
@@ -94,6 +102,20 @@ export function useTableVirtualization(options: VirtualizationOptions) {
   });
 
   const rowVirtualizer = useVirtualizer(rowVirtualizerOptions);
+
+  // TanStack normally compensates scrollTop when a measured item above the
+  // viewport differs from its estimate. That is useful for a self-contained
+  // list, but wrong for a delegated scroller that also owns a histogram or
+  // other content above the table: wrapped rows are remeasured when query data
+  // changes and their deltas otherwise push the whole Logs view downward.
+  watchEffect(() => {
+    rowVirtualizer.value.shouldAdjustScrollPositionOnItemSizeChange = toValue(
+      preserveScrollOffsetOnRowResize,
+    )
+      ? () => false
+      : undefined;
+  });
+
   const virtualRows = computed(() => rowVirtualizer.value.getVirtualItems());
   const totalSize = computed(() => rowVirtualizer.value.getTotalSize() + 24);
 

web/src/lib/feedback/Banner/OBanner.vue

@@ -4,7 +4,7 @@ import { computed, useSlots } from "vue";
 
 import OIcon from "@/lib/core/Icon/OIcon.vue";
 interface Props {
-  variant?: "default" | "info" | "success" | "warning" | "error" | "error-soft";
+  variant?: "default" | "info" | "success" | "warning" | "error" | "error-soft" | "promo";
   content?: I18nText;
   icon?: string;
   dense?: boolean;
@@ -17,6 +17,18 @@ interface Props {
    * banners visibly ragged.
    */
   bar?: boolean;
+  /**
+   * Bar mode: centre the message and its actions as one group rather than
+   * pinning actions to the right edge. For a short promotional line, where a
+   * left-aligned message with the action stranded across the viewport reads as
+   * two unrelated things.
+   */
+  center?: boolean;
+  /**
+   * Overrides the role derived from `variant`. Only for a bar that is part of
+   * the page's furniture rather than a notification.
+   */
+  role?: "status" | "alert" | "banner";
   dataTest?: string;
 }
 
@@ -25,12 +37,14 @@ const props = withDefaults(defineProps<Props>(), {
   dense: false,
   inlineActions: false,
   bar: false,
+  center: false,
 });
 
 const slots = useSlots();
 
-const ariaRole = computed(() =>
-  props.variant === "error" || props.variant === "warning" ? "alert" : "status",
+const ariaRole = computed(
+  () =>
+    props.role ?? (props.variant === "error" || props.variant === "warning" ? "alert" : "status"),
 );
 
 const hasDefaultSlot = computed(() => !!slots.default);
@@ -49,6 +63,9 @@ const variantClass = computed(() => {
       return "bg-banner-warning-bg border border-banner-warning-border border-l-4 border-l-banner-warning-border text-banner-warning-text";
     case "error":
       return "bg-banner-error-bg text-banner-error-text";
+    // Marketing gold, shared with the standalone webinar bar so the two match.
+    case "promo":
+      return "bg-promo-webinar-accent text-promo-webinar-text";
     // Tinted error for hints/insights — solid `error` stays for hard failures.
     case "error-soft":
       return "bg-banner-error-soft-bg border border-banner-error-soft-border border-l-4 border-l-banner-error-soft-border text-banner-error-soft-text";
@@ -76,6 +93,8 @@ const barVariantClass = computed(() => {
       return "bg-banner-error-bg text-banner-error-text";
     case "error-soft":
       return "bg-banner-error-soft-bg text-banner-error-soft-text";
+    case "promo":
+      return "bg-promo-webinar-accent text-promo-webinar-text";
     default:
       return "bg-banner-default-bg text-banner-default-text";
   }
@@ -88,7 +107,9 @@ const barVariantClass = computed(() => {
     :data-test="dataTest"
     :class="[
       'flex',
-      bar ? 'w-full flex-row flex-wrap items-center justify-between gap-3 px-4 py-2' : '',
+      bar ? 'w-full flex-row flex-wrap items-center gap-3 px-4' : '',
+      bar ? (dense ? 'py-1' : 'py-2') : '',
+      bar ? (center ? 'justify-center' : 'justify-between') : '',
       bar ? '' : 'rounded-default',
       bar ? '' : inlineActions ? 'flex-row items-center gap-3' : 'flex-col gap-2',
       bar ? '' : dense ? 'p-2' : 'p-4',
@@ -98,7 +119,7 @@ const barVariantClass = computed(() => {
     <div
       :class="[
         'flex flex-row gap-3',
-        bar ? 'min-w-0 flex-1 items-center' : 'items-start',
+        bar ? (center ? 'min-w-0 items-center' : 'min-w-0 flex-1 items-center') : 'items-start',
         inlineActions && !bar ? 'flex-1' : '',
       ]"
     >

web/src/views/Dashboards/RenderDashboardCharts.vue

@@ -206,7 +206,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
                       <!-- Panel Time Picker (NEW) -->
                       <div
                         v-if="hasPanelTime(item) && panelTimeValues[item.id]"
-                        class="panel-time-picker-wrapper mb-2"
+                        class="panel-time-picker-wrapper mt-1 mb-2"
                         :data-test="`dashboard-panel-${item.id}-time-picker`"
                       >
                         <DateTimePickerDashboard

web/src/views/Ingestion.vue

@@ -183,16 +183,18 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
       v-model="confirmRUMUpdate"
     />
     <!-- Empty-data warning banner -->
-    <div
+    <OBanner
       v-if="
         store.state.zoConfig.hasOwnProperty('restricted_routes_on_empty_data') &&
         store.state.zoConfig.restricted_routes_on_empty_data == true &&
         store.state.organizationData.isDataIngested == false
       "
-      class="text-subtitle bg-warning rounded-default mx-2.5 mt-1 p-2 font-bold"
-    >
-      {{ t("ingestion.redirectionIngestionMsg") }}
-    </div>
+      variant="promo"
+      dense
+      class="mx-2.5 mt-1 font-bold"
+      :content="t('ingestion.redirectionIngestionMsg')"
+    />
+
     <div class="min-h-0 flex-1">
       <router-view
         :title="ingestTabType"
@@ -224,6 +226,7 @@ import { getImageURL } from "@/utils/zincutils";
 import apiKeysService from "@/services/api_keys";
 import ConfirmDialog from "@/components/ConfirmDialog.vue";
 import OSelect from "@/lib/forms/Select/OSelect.vue";
+import OBanner from "@/lib/feedback/Banner/OBanner.vue";
 import type { SelectModelValue } from "@/lib/forms/Select/OSelect.types";
 import { searchIngestionItems } from "@/utils/ingestionSearchIndex";
 import { awsIntegrations } from "@/utils/awsIntegrations";
@@ -231,7 +234,16 @@ import { toast } from "@/lib/feedback/Toast/useToast";
 
 export default defineComponent({
   name: "PageIngestion",
-  components: { OPageLayout, ConfirmDialog, OTabs, ORouteTab, OButton, OSearchInput, OSelect },
+  components: {
+    OPageLayout,
+    ConfirmDialog,
+    OTabs,
+    ORouteTab,
+    OButton,
+    OSearchInput,
+    OSelect,
+    OBanner,
+  },
   setup() {
     const { t } = useI18nTyped();
     const store = useStore();