Unreal Engine Issues

UE-33450

User's project crashes after removing widget from the viewport

User's project crashes after removing widget from the viewport

Questions & Answers
Description

The editor appears to crash when a widget is removed from the viewport by another widget

Steps to Reproduce
  1. Download attached project
  2. Open project
  3. Click no for the market place asset
  4. Play in Editor
  5. Click "Mysite"
  6. Wait for about 10 seconds
  7. Notice that the editor crashes

Expected: The widget would remove the widget from the viewport and the user would see the original screen (with the Mysite button)
Result: The editor crashes

Callstack
UE4Editor_SlateCore!FSlateElementBatcher::AddViewportElement() elementbatcher.cpp:1483 
UE4Editor_SlateCore!FSlateElementBatcher::AddElements() elementbatcher.cpp:212 
UE4Editor_SlateCore!FSlateElementBatcher::AddElements() elementbatcher.cpp:83 
UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::DrawWindows_Private() slaterhirenderer.cpp:589 
UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() slateapplication.cpp:1258 
UE4Editor_Slate!FSlateApplication::DrawWindows() slateapplication.cpp:969 
UE4Editor_Slate!FSlateApplication::TickApplication() slateapplication.cpp:1558 
UE4Editor_Slate!FSlateApplication::Tick() slateapplication.cpp:1350 
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2810 
UE4Editor!GuardedMain() launch.cpp:148 
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126 
UE4Editor!WinMain() launchwindows.cpp:200 
UE4Editor!__scrt_common_main_seh() exe_common.inl:264 
kernel32!<Unknown> 
ntdll!<Unknown>

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Fixed
ComponentUE - Editor - UI Systems
Affects Versions4.12.5
Target Fix4.13
Fix Commit3070757
Main Commit3092051
Release Commit3070757
CreatedJul 19, 2016
ResolvedJul 29, 2016
UpdatedMay 2, 2018
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