209823 2020-03-31 11:19:03 -0700 [ Mac Debug ] ASSERTION FAILED: m_videoFullscreenMode != VideoFullscreenModeNone on media/media-fullscreen-return-to-inline.html 2020-04-01 17:16:56 -0700 1 1 1 Unclassified WebKit Media WebKit Nightly Build Mac macOS 10.15 RESOLVED DUPLICATE 209680 https://bugs.webkit.org/show_bug.cgi?id=209680 InRadar P2 Normal --- 1 Lawrence.j webkit-unassigned peng.liu6 webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1636146 0 Lawrence.j 2020-03-31 11:19:03 -0700 media/media-fullscreen-return-to-inline.html Description: This test is flaky crashing on Mac Debug. the oldest crash is on 11/13/2019, but Im not able to pull up logs or details from that run. History: https://results.webkit.org/?suite=layout-tests&test=media%2Fmedia-fullscreen-return-to-inline.html&platform=mac&limit=50000&style=debug Crash logs: No crash log found for DumpRenderTree:36221. stdout: stderr: MRMediaRemoteSetNowPlayingApplicationPlaybackStateForOrigin(playing) failed with error 0 ASSERTION FAILED: m_videoFullscreenMode != VideoFullscreenModeNone ./html/HTMLMediaElement.cpp(6105) : void WebCore::HTMLMediaElement::exitFullscreen() 1 0x10bdcec29 WTFCrash 2 0x11ee7c21b WTFCrashWithInfo(int, char const*, char const*, int) 3 0x121d063b5 WebCore::HTMLMediaElement::exitFullscreen() 4 0x10a8603cf -[WebVideoFullscreenController windowDidExitFullScreen:] 5 0x7fff389509cf __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ 6 0x7fff38950963 ___CFXRegistrationPost1_block_invoke 7 0x7fff389508d8 _CFXRegistrationPost1 8 0x7fff38950544 ___CFXNotificationPost_block_invoke 9 0x7fff389206bd -[_CFXNotificationRegistrar find:object:observer:enumerator:] 10 0x7fff3891fb69 _CFXNotificationPost 11 0x7fff3af96866 -[NSNotificationCenter postNotificationName:object:userInfo:] 12 0x7fff366c5120 -[NSWindow(NSFullScreen) _didExitFullScreen] 13 0x7fff36285879 -[_NSWindowExitFullScreenTransitionController doAfterExitFullScreen] 14 0x7fff364fd3d6 -[_NSExitFullScreenTransitionController _doAfterExitFullScreen] 15 0x7fff364ff8e6 ___NSRunLoopTimerCreateWithHandler_block_invoke 16 0x7fff389759b9 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ 17 0x7fff3897551f __CFRunLoopDoTimer 18 0x7fff38975007 __CFRunLoopDoTimers 19 0x7fff38959daa __CFRunLoopRun 20 0x7fff38958ffe CFRunLoopRunSpecific 21 0x105c9b79d runTest(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) 22 0x105c9a9ea runTestingServerLoop() 23 0x105c9a159 dumpRenderTree(int, char const**) 24 0x105c9c15d DumpRenderTreeMain(int, char const**) 25 0x105d2a972 main 26 0x7fff728a2cc9 start 1636147 1 webkit-bug-importer 2020-03-31 11:19:19 -0700 <rdar://problem/61116593> 1636150 2 Lawrence.j 2020-03-31 11:24:26 -0700 I have marked this test as crashing while this issue is investigated. https://trac.webkit.org/changeset/259301/webkit 1636744 3 peng.liu6 2020-04-01 17:16:56 -0700 I think the patch for webkit.org/b/209680 will fix this bug as well. *** This bug has been marked as a duplicate of bug 209680 ***