Unreal Engine Issues
Unreal Engine Issues
Crash on Unreal Editor Exit due to subclass of UEditorUtilitySubsystem
UE - Editor - UI Systems - UMG - Jun 18, 2024Since UE5.4, it has been reported that if there's a class derived from UEditorUtilitySubsystem, the program crashes when the editor exits. This is because the code added in CL30853505 accesses freed ...
BP - Nativized build will crash at runtime if a non-nativized child that inherits from a nativized parent containing a ChildActorComponent sets the CAC class to a non-nativized child of a nativized BP class.
UE - Gameplay - Blueprint - Jan 26, 2020Current workaround: Add a dummy variable to either BP_Owner_Child or BP_CAC_Child to force one of the two to be nativized. ...
[MRQ] Deleting all jobs after rendering queue with executor causes an assertion to fail.
UE - Anim - Sequencer - MRQ - Apr 18, 2022Deleting all jobs after rendering queue with executor causes an assertion to fail. Repro Rate: 3/3 Tested this in //UE4/Release-4.27 @ CL#18319896 by utilizing a For Each Loop and Delete Job node ...
User-instanced subobjects owned by a streaming sublevel's Blueprint CDO cannot be garbage collected with the owning world after the sublevel has been reloaded in the editor.
UE - Gameplay - Blueprint - Feb 5, 2020Strong object reference properties of an 'EditInline'-decorated UCLASS type embedded within a native C++ struct definition can be instanced at edit time by the user as part of a variable's default v ...
ZenGarden or project with MSAA enabled crashes on iPhone 6 and 6+
UE - Platform - Mobile - Jul 19, 2017Zen Garden crashes on the iPhone 6+ before anything appears onscreen. Occurred on: iPhone 6+ on 10.3.2 Didn't occur on: iPhone 6S on 10.3.2 ...
Hot Reload does not update blueprint pins
UE - Gameplay - Blueprint - Jan 15, 2015When changing the variable type or return type of a function in code and hot reload in the editor, blueprints that use the variable/function do not have their pins updated until the editor is closed ...
Crash Undoing Create New Camera in Sequencer
UE - Anim - Sequencer - Jul 12, 2016If the user selects the "Create New Camera" button in a sequence, then uses undo, the editor crashes. This issue does not occur in //UE4/Main @ 3046959 ...
Editor Crashes when spawning a Physics enabled object inside another
UE - Simulation - Physics - Sep 22, 2017Editor Crashes when spawning a Physics enabled object inside another. Regression: Unknown Can Test in Main if requested. ...
Console command “showflag.rendering 0” causes crash
UE - Rendering Architecture - Jul 10, 2025A crash occurs when the console command “showflag.rendering 0” is executed. This does not occur in UE5.5, so it is a iassue in UE5.6. ...
[MRQ] Simulating in editor during runtime rendering causes an assertion to fail after rendering is done
UE - Graphics Features - Apr 19, 2022Simulating in editor during runtime rendering causes an assertion to fail after rendering is done. Repro Rate: 4/4 Tested this in //UE4/Release-4.27 @ CL#18319896 and the issue did not occur there ...