Unreal Engine Issues
Unreal Engine Issues
[AI] UE_MT_SCOPED_READ_ACCESS(NavElementAccessDetector) Fails in editor on fresh sync
UE - AI - Navigation - Jan 27, 2025Licensees have reported failed multi-thread access code for NavElementAccessDetector in complex levels that have not finished compilation of their static meshes. The eventual failed check is inside ...
Interactions in the Menu are not working as expected in VRTemplate
UE - Platform - XR - Nov 17, 2022Interactions in the Menu on VRTemplate (and I suspect that style of menu interaction in general) do not function as expected. This issue was reproduced several times (5/5), both with a VR headset an ...
Connecting GetSequenceBinding node to LevelSequence including Spawnable Actor etc. will result in error
UE - Gameplay - Blueprint Editor - Feb 22, 2018[Link Removed] ・Open attached project ・Open NewMap ・Confirm that an error appears on the console ・When creating a Windows (64-Bit) package in this state, the same error occurs ...
Crash when running "MAP REBUILD ALLVISIBLE" with hidden sublevels and then changing maps
UE - World Creation - Worldbuilding Tools - Sep 1, 2025Running the MAP REBUILD ALLVISIBLE editor command when the current map contains hidden sublevels causes a crash upon changing maps. The issue seems to be related to hidden sublevels being cleared in ...
When the WidgetInteraction component hovers over the Button of the Control component, executing the Press Pointer Key causes any ongoing Input operations to force their "Completed" operation
UE - Gameplay - Input - Jan 9, 2023Reproduced 3/3 times, issue does not occur in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed Regression. Other Notes:Any ongoing Input operations gets forced to their "Completed" operation I cr ...
The 'Add Movement Input' node no longer functions on a Default Pawn
UE - Gameplay - Apr 1, 2015The 'Add Movement Input' node no longer functions on a Default Pawn. This worked in 4.5.1 & 4.6.1. ...
Movie Scene Capture - DX12 Render Artifacts and Delay
UE - Rendering - Architecture - RHI - Jun 19, 2023If using the Legacy renderer (Movie Scene Capture) with DefaultRHI DirectX12, there's new delay and also some frames get weird artifacts. However, the delay and artifacts do not appear when using ...
Improper clipping in children of a retainer widget
UE - Editor - UI Systems - Slate - Jan 21, 2025Children of retainer widgets have improper clipping, causing any widgets set to "Clip to Bounds" to clip incorrectly. This may also affect hit testing in cases where multiple retainer widgets are ne ...
Interaction between sublevels and LevelSequences can break actors attachments hierarchy of the sublevel.
UE - World Creation - Worldbuilding Tools - Aug 6, 2025Having a LevelSequence opened and unhiding a sublevel can break the attachment hierarchy of the actors that are inside the sublevel. This also affects to the sublevel asset itself. ...
C# UHT fails to recognize delegates declared in another class's namespace
UE - Foundation - Cpp Tools - UnrealHeaderTool - Dec 14, 2022Repro Rate: 3/3 This issue occurs in the live build //UE5/Release-5.1 at CL 23058290. This issue has also been regression tested against //UE5/Release-5.0 at CL 20979098 and is confirmed to be a r ...