test: trace hidden-window throttle changes during dialog cleanup

tests/e2e/helpers/hidden-electron-compositor.ts

@@ -4,6 +4,11 @@ export async function enableHiddenElectronCompositor(app: ElectronApplication):
   await app.evaluate(({ BrowserWindow }) => {
     if (process.env.ORCA_E2E_HEADLESS === '1' && process.env.ORCA_E2E_HEADFUL !== '1') {
       for (const window of BrowserWindow.getAllWindows()) {
+        const original = window.webContents.setBackgroundThrottling.bind(window.webContents)
+        window.webContents.setBackgroundThrottling = (allowed) => {
+          console.info('[hidden-throttle-change] ' + JSON.stringify({ allowed, stack: new Error().stack }))
+          original(allowed)
+        }
         window.webContents.setBackgroundThrottling(false)
       }
     }

tests/e2e/helpers/ssh-config-host-picker.ts

@@ -98,7 +98,18 @@ export async function closeOpenDialogs(page: Page): Promise<void> {
     }
     const cancel = dialog.getByRole('button', { name: 'Cancel', exact: true })
     await ((await cancel.isVisible()) ? cancel.click() : page.keyboard.press('Escape'))
-    await expect(dialog).toBeHidden({ timeout: 3_000 })
+    try {
+      await expect(dialog).toBeHidden({ timeout: 3_000 })
+    } catch (error) {
+      console.info('[dialog-exit-diagnostic] ' + JSON.stringify(await dialog.evaluate((element) => ({
+        state: element.getAttribute('data-state'),
+        visibility: document.visibilityState,
+        animations: element.getAnimations().map((animation) => ({
+          playState: animation.playState, currentTime: animation.currentTime, pending: animation.pending
+        }))
+      }))))
+      throw error
+    }
   }
   await expect(page.getByRole('dialog')).toHaveCount(0, { timeout: 3_000 })
 }