Intermittent UI test failure - SmokeTest.openRecentlyClosedTabsInNewPrivateTabTest

[sv-ohorvath]

Firebase Test Run:

Flaky, failed 1/2 tries:
https://console.firebase.google.com/u/1/project/moz-fenix/testlab/histories/bh.66b7091e15d53d45/matrices/6572327392771523352/executions/bs.658c5a176b9e5a06/testcases/1/test-cases

Stacktrace:

androidx.test.espresso.NoMatchingViewException: No views in hierarchy found matching: (with text: is "Search or enter address") View Hierarchy: +>DecorView{id=-1, visibility=VISIBLE, width=1080, height=1920, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params={(0,0)(fillxfill) sim={adjust=resize} ty=BASE_APPLICATION wanim=0x7f14033f fl=LAYOUT_IN_SCREEN LAYOUT_INSET_DECOR HARDWARE_ACCELERATED DRAWS_SYSTEM_BAR_BACKGROUNDS pfl=FORCE_DRAW_STATUS_BAR_BACKGROUND}, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=2} | +->LinearLayout{id=-1, visibility=VISIBLE, width=1080, height=1788, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.FrameLayout$LayoutParams@a4cb0bc, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=2} | +-->ViewStub{id=16908682, res-name=action_mode_bar_stub, visibility=GONE, width=0, height=0, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=true, is-selected=false, layout-params=android.widget.LinearLayout$LayoutParams@de8b845, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0} | +-->FrameLayout{id=-1, visibility=VISIBLE, width=1080, height=1722, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.LinearLayout$LayoutParams@e99ab9a, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=66.0, child-count=1} | +--->FitWindowsLinearLayout{id=2131361869, res-name=action_bar_root, visibility=VISIBLE, width=1080, height=1722, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.FrameLayout$LayoutParams@d921ca8, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=2} | +---->ViewStubCompat{id=2131361936, res-name=action_mode_bar_stub, visibility=GONE, width=0, height=0, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=true, is-selected=false, layout-params=android.widget.LinearLayout$LayoutParams@de193c1, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0} | +---->ContentFrameLayout{id=16908290, res-name=content, visibility=VISIBLE, width=1080, height=1722, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.LinearLayout$LayoutParams@c56e766, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=1} | +----->LinearLayout{id=2131362797, res-name=rootContainer, visibility=VISIBLE, width=1080, height=1722, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.FrameLayout$LayoutParams@5405b54, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=2} | +------>ViewStub{id=2131362650, res-name=navigationToolbarStub, visibility=GONE, width=0, height=0, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=true, is-selected=false, layout-params=android.widget.LinearLayout$LayoutParams@f32aafd, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0} | +------>FragmentContainerView{id=2131362179, res-name=container, visibility=VISIBLE, width=1080, height=1722, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.LinearLayout$LayoutParams@55a13f2, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=0} | +->View{id=16908336, res-name=navigationBarBackground, visibility=VISIBLE, width=1080, height=132, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.FrameLayout$LayoutParams@89a6a43, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=1788.0} | at dalvik.system.VMStack.getThreadStackTrace(Native Method) at java.lang.Thread.getStackTrace(Thread.java:1538) at androidx.test.espresso.base.DefaultFailureHandler.getUserFriendlyError(DefaultFailureHandler.java:16) at androidx.test.espresso.base.DefaultFailureHandler.handle(DefaultFailureHandler.java:36) at androidx.test.espresso.ViewInteraction.waitForAndHandleInteractionResults(ViewInteraction.java:106) at androidx.test.espresso.ViewInteraction.check(ViewInteraction.java:31) at org.mozilla.fenix.ui.robots.HomeScreenRobotKt.assertNavigationToolbar(HomeScreenRobot.kt:480) at org.mozilla.fenix.ui.robots.HomeScreenRobotKt.access$assertNavigationToolbar(HomeScreenRobot.kt:1) at org.mozilla.fenix.ui.robots.HomeScreenRobot$Transition.openNavigationToolbar(HomeScreenRobot.kt:378) at org.mozilla.fenix.ui.SmokeTest.openRecentlyClosedTabsInNewPrivateTabTest(SmokeTest.kt:788)

Build:

Debug 5/1

To me, from the video and logs, it seems like the app didn't load any UI elements. Same failure on other tests: #18635 (comment)

┆Issue is synchronized with this Jira Task

[AndiAJ]

Flaky 1x on Master 5/6 : Firebase link

[AndiAJ]

Fixed this in #19417