Unreal Engine Issues and Bug Tracker (UE-38348)

Developer Notes

This issue has been closed as 'Won't Fix' due to an extended period of time without updates. If this issue is important to you please let us know by posting on the AnswerHub or UDN, and Epic will re-open the ticket for further review.

Questions & Answers

Description

Crash when opening the viewport tab of an actor containing a widget component with "Draw at Desired Size" set to true

Steps to Reproduce

Download the attached project
Open the project
Open "3Dwidget"
Click the Viewport tab
Notice that the editor crashes
Open the project again
Open "3Dwidget"
Click on the widget component in the component's tab and uncheck "Draw at Desired Size" (before opening the viewport tab)
Click on the viewport tab
Notice that the editor does not crash

Expected: The viewport would be shown and the editor would not crash
Result: Having Draw at Desired Size set to true appears to cause the editor to crash when using the viewport of an actor blueprint

Callstack

UE4Editor_Engine!UTextureRenderTarget::GameThread_GetRenderTargetResource() texturerendertarget.cpp:44 
UE4Editor_UMG!FWidgetRenderer::DrawWindow() widgetrenderer.cpp:255 
UE4Editor_UMG!FWidgetRenderer::DrawWindow() widgetrenderer.cpp:180 
UE4Editor_UMG!UWidgetComponent::DrawWidgetToRenderTarget() widgetcomponent.cpp:674 
UE4Editor_UMG!UWidgetComponent::TickComponent() widgetcomponent.cpp:552 
UE4Editor_Engine!FActorComponentTickFunction::ExecuteTickHelper<<lambda_aa79ebd94b2c9e6b2d520765e2e11e5e> >() actor.h:2937 
UE4Editor_Engine!FActorComponentTickFunction::ExecuteTick() actorcomponent.cpp:707 
UE4Editor_Engine!FTickFunctionTask::DoTask() ticktaskmanager.cpp:251 
UE4Editor_Engine!TGraphTask<FTickFunctionTask>::ExecuteTask() taskgraphinterfaces.h:868 
UE4Editor_Core!FNamedTaskThread::ProcessTasksNamedThread() taskgraph.cpp:932 
UE4Editor_Core!FNamedTaskThread::ProcessTasksUntilIdle() taskgraph.cpp:694 
UE4Editor_Engine!FTickTaskSequencer::ReleaseTickGroup() ticktaskmanager.cpp:537 
UE4Editor_Engine!FTickTaskManager::RunTickGroup() ticktaskmanager.cpp:1429 
UE4Editor_Engine!UWorld::RunTickGroup() leveltick.cpp:706 
UE4Editor_Engine!UWorld::Tick() leveltick.cpp:1286 
UE4Editor_Kismet!FSCSEditorViewportClient::Tick() scseditorviewportclient.cpp:202 
UE4Editor_UnrealEd!UEditorEngine::Tick() editorengine.cpp:1476 
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() unrealedengine.cpp:371 
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2834 
UE4Editor!GuardedMain() launch.cpp:156 
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126 
UE4Editor!WinMain() launchwindows.cpp:202 
UE4Editor!__scrt_common_main_seh() exe_common.inl:264 
kernel32!<Unknown> 
ntdll!<Unknown>

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Won't Fix

Component	UE - Editor - UI Systems
Affects Versions	4.13.2

Created	Nov 8, 2016
Resolved	Jun 13, 2017
Updated	Apr 27, 2018

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