diff --git a/tests/ui-testing/pages/dashboardPages/dashboard-panel-actions.js b/tests/ui-testing/pages/dashboardPages/dashboard-panel-actions.js
index 616db91472..a2bfb28355 100644
--- a/tests/ui-testing/pages/dashboardPages/dashboard-panel-actions.js
+++ b/tests/ui-testing/pages/dashboardPages/dashboard-panel-actions.js
@@ -363,7 +363,10 @@ export default class DashboardactionPage {
     );
     await this.applyDashboardBtn();
     const response = await promqlResponse;
-    await response.finished();
+    // A streamed (text/event-stream) response may never report finished; waitForChartToRender covers completion.
+    if (!(await response.headerValue("content-type"))?.includes("text/event-stream")) {
+      await response.finished();
+    }
     await this.waitForChartToRender();
     return response;
   }
@@ -384,9 +387,10 @@ export default class DashboardactionPage {
     );
   }
 
-  /** Sorted sample values of every series in a finished PromQL query_range event-stream response. */
+  /** Sorted sample values of every series in a PromQL query_range event-stream response. */
   async promqlSampleValues(response) {
-    return (await response.text())
+    // The browser can abort the stream after the last event and keep no body, so fetch the same absolute range again.
+    return (await (await this.page.request.get(response.url())).text())
       .split("\n")
       .filter((line) => line.startsWith("data: "))
       .map((line) => {