Description

This is a longstanding crash that has occurred since at least 4.13.

User Descriptions

  • I cant package. Every time I try, I get a crash and an "Unknown Error"
  • failed to switch between game modes and after changing from a vehicle to character game mode it crashed

Source Context

 1205       void FSlateApplication::DrawWindowAndChildren( const TSharedRef<SWindow>& WindowToDraw, FDrawWindowArgs& DrawWindowArgs )
 1206       {
 1207       	// On Mac, where child windows can be on screen even if their parent is hidden or minimized, we want to always draw child windows.
 1208       	// On other platforms we set bDrawChildWindows to true only if we draw the current window.
 1209       	bool bDrawChildWindows = PLATFORM_MAC;
 1210       
 1211       	// Only draw visible windows
 1212 ***** 	if( WindowToDraw->IsVisible() && (!WindowToDraw->IsWindowMinimized() || FApp::UseVRFocus()) )
 1213       	{
 1214       		SLATE_CYCLE_COUNTER_SCOPE_CUSTOM(GSlateDrawWindowAndChildren, WindowToDraw->GetCreatedInLocation());
Steps to Reproduce

repro steps currently unknown

Callstack
UE4Editor_Slate!FSlateApplication::DrawWindowAndChildren() [slateapplication.cpp:1213]
UE4Editor_Slate!FSlateApplication::DrawWindowAndChildren() [slateapplication.cpp:1322]
UE4Editor_Slate!FSlateApplication::DrawWindowAndChildren() [slateapplication.cpp:1322]
UE4Editor_Slate!FSlateApplication::DrawWindowAndChildren() [slateapplication.cpp:1322]
UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() [slateapplication.cpp:1473]
UE4Editor_Slate!FSlateApplication::DrawWindows() [slateapplication.cpp:1190]
UE4Editor_Slate!FSlateApplication::TickApplication() [slateapplication.cpp:1777]
UE4Editor_Slate!FSlateApplication::Tick() [slateapplication.cpp:1595]
UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3378]
UE4Editor!GuardedMain() [launch.cpp:166]
UE4Editor!GuardedMainWrapper() [launchwindows.cpp:134]
UE4Editor!WinMain() [launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [exe_common.inl:253]
kernel32!BaseThreadInitThunk()
ntdll!RtlUserThreadStart()

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Unresolved
ComponentTools - Slate
Affects Versions4.134.144.154.164.174.184.194.204.214.22
CreatedNov 10, 2017
UpdatedApr 24, 2019