Description

This is a regression as the issue does not occur in //UE5/Release-5.1.1 - CL 23901901

 

 

Steps to Reproduce
  1. Open any project in UE
  2. Click Window > Load Layout > Default Editor Layout
  3. Resize the Outliner and Content Drawer to make the Viewport smaller
  4. Window > Load Layout > UE4 Classic Layout
  5. Window > Load Layout > Default Editor Layout

Expected Results: The layout should change without an issue

Actual Results: Editor Crashes with an Ensure

Callstack
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0xffffffffffffffff

UnrealEditor_Slate!FTabManager::PersistLayout() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Docking\TabManager.cpp:915]
UnrealEditor_Slate!<lambda_68306145e6c4534a55f5ce5145af1c34>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Docking\TabManager.cpp:977]
UnrealEditor_Core!FTSTicker::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Private\Containers\Ticker.cpp:110]
UnrealEditor!FEngineLoop::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:6050]
UnrealEditor!GuardedMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:188]
UnrealEditor!GuardedMainWrapper() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:107]
UnrealEditor!LaunchWindowsStartup() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:244]
UnrealEditor!WinMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:284]
UnrealEditor!__scrt_common_main_seh() [D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll 

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Cannot Reproduce
ComponentUE - Editor - Workflow Systems
Affects Versions5.2
Target Fix5.3
CreatedJun 1, 2023
ResolvedJul 19, 2023
UpdatedJan 19, 2024
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