Description

No user comments in crash group

 450       		NewHeight = FMath::Max( NewHeight, FMath::Min( OldHeight, MinRetainedHeight ) );
  451       	}
  452       
  453       	if (IsMaximized())
  454       	{
  455       		Restore();
  456       	}
  457       
  458       	// We use SWP_NOSENDCHANGING when in fullscreen mode to prevent Windows limiting our window size to the current resolution, as that 
  459       	// prevents us being able to change to a higher resolution while in fullscreen mode
  460       	::SetWindowPos( HWnd, nullptr, WindowX, WindowY, NewWidth, NewHeight, SWP_NOZORDER | SWP_NOACTIVATE | ((WindowMode == EWindowMode::Fullscreen) ? SWP_NOSENDCHANGING : 0) );
  461       
  462       	if( Definition->SizeWillChangeOften && bVirtualSizeChanged )
  463       	{
  464 ***** 		AdjustWindowRegion( VirtualWidth, VirtualHeight );
  465       	}
  466       }
  467       
Steps to Reproduce

No known steps to reproduce

Callstack
Assertion failed: SetWindowRgn( HWnd, Region, false ) [File:D:\Build\++UE4+Release-4.18+Compile\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsWindow.cpp] [Line: 400]

UE4Editor_ApplicationCore!FWindowsWindow::ReshapeWindow() [windowswindow.cpp:465]
UE4Editor_SlateCore!SWindow::Resize() [swindow.cpp:920]
UE4Editor_Slate!PrepassWindowAndChildren() [slateapplication.cpp:1351]
UE4Editor_Slate!PrepassWindowAndChildren() [slateapplication.cpp:1352]
UE4Editor_Slate!FSlateApplication::DrawPrepass() [slateapplication.cpp:1391]
UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() [slateapplication.cpp:1433]
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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Won't Fix
ComponentTools
Affects Versions4.134.174.184.194.204.21
CreatedFeb 17, 2018
ResolvedAug 18, 2021
UpdatedAug 18, 2021