Assertion failed:
([self.titlebarContainerView superview] == nil), function -[NSThemeFrame _reacquireToolbarViewFromFullScreenWindowAndShow:], file /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppKit/AppKit-1561.20.106/AppKit.subproj/NSThemeFrame.m, line 7805.
Received signal 6
0   libbase.dylib                       0x00000001202103fe base::debug::StackTrace::StackTrace(unsigned long) + 174
1   libbase.dylib                       0x00000001202104bd base::debug::StackTrace::StackTrace(unsigned long) + 29
2   libbase.dylib                       0x000000012020e93c base::debug::StackTrace::StackTrace() + 28
3   libbase.dylib                       0x00000001202101ef base::debug::(anonymous namespace)::StackDumpSignalHandler(int, __siginfo*, void*) + 1439
4   libsystem_platform.dylib            0x00007fff5bad3f5a _sigtramp + 26
5   ???                                 0x00007feb7570f070 0x0 + 140649264377968
6   libsystem_c.dylib                   0x00007fff5b8fe312 abort + 127
7   libsystem_c.dylib                   0x00007fff5b8c6368 basename_r + 0
8   AppKit                              0x00007fff31755a79 -[NSThemeFrame _reacquireToolbarViewFromFullScreenWindowAndShow:] + 621
9   AppKit                              0x00007fff31fecf70 -[NSWindow(NSFullScreen) _cleanupAndRemoveFullScreenContentController] + 78
10  AppKit                              0x00007fff31fee956 -[NSWindow(NSFullScreen) _fullScreenStatusChanged] + 374
11  AppKit                              0x00007fff3167a82b __25-[NSWindow setStyleMask:]_block_invoke + 2178
12  AppKit                              0x00007fff3159a018 NSPerformVisuallyAtomicChange + 146
13  AppKit                              0x00007fff31679f60 -[NSWindow setStyleMask:] + 191
14  AppKit                              0x00007fff31af6c22 -[_NSWindowExitFullScreenTransitionController setupWindowForAfterFullScreenExit] + 106
15  AppKit                              0x00007fff31ddfb8c __46-[_NSExitFullScreenTransitionController start]_block_invoke.268 + 57
16  libdispatch.dylib                   0x00007fff5b820591 _dispatch_call_block_and_release + 12
17  libdispatch.dylib                   0x00007fff5b818d50 _dispatch_client_callout + 8
18  libdispatch.dylib                   0x00007fff5b82432d _dispatch_main_queue_callback_4CF + 1148
19  CoreFoundation                      0x00007fff33edab49 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
20  CoreFoundation                      0x00007fff33e9d43a __CFRunLoopRun + 2586
21  CoreFoundation                      0x00007fff33e9c787 CFRunLoopRunSpecific + 487
22  HIToolbox                           0x00007fff331a9e26 RunCurrentEventLoopInMode + 286