Unreal Engine Issues
Unreal Engine Issues
Maps fail to respond to any changes made in the CDO if any value has been modified in a loaded instance
UE - Gameplay - Blueprint Editor - Mar 18, 2020TMaps do not function as I would expect when blueprinted. Any change made to the instance completely disables inheritance of all changes to the CDO, rather than only overriding the keys that are mod ...
Handheld AR: Session fails to Start after minimizing/backgrounding the application
UE - Platform - XR - May 18, 2021When the user minimizes or backgrounds an AR application, and re-opens it, new AR sessions will fail to start ...
Root Motion Not Retained when Retargeting Animation Assets from UE4 to UE5
UE - Anim - Rigging - Retargeting - Apr 12, 2022Occurs 5/5 Times RootMotion of an animation asset is not retained when retargeting Root Motion Animation asset from UE4 to UE5. ...
City Sample - Parked Cars, Traffic, and Crowds do not spawn while in PIE
UE - AI - Mass - May 1, 2023Repro Rate 10/10 Issue is a Regression as it doesn't occur in 5.1 Parked Cars, Traffic, and Crowds spawn in as expected when launching the project in Game Mode or a Packaged Build Going into the ...
Hitting a breakpoint in widget blueprint while running PIE with Selected Viewport mode blocks entire editor rendering
UE - Editor - UI Systems - UMG - Oct 6, 2023This problem does not occur when running PIE with New Editor Window mode. ...
During blueprint reparenting SimpleConstructionScript subobject unmodified values are retained as modified values
UE - Framework - Blueprint Editor - Nov 27, 2024When reparenting blueprints and both the old and new parent blueprint contain a subobject but with different values on it, the reparented blueprint doesn't correctly inherit values from the new pare ...
Input Actions bound to Any Key become unresponsive after mouse scroll until scrolled again
UE - Gameplay - Input - Mar 28, 2025In UE latest release (5.5 launcher version), Enhanced Input Actions mapped to "Any Key" stop responding after scrolling the mouse wheel. Specifically, scrolling either up or down disables the Any Ke ...
World Position Offset invalidates Point Lights Entire Virtual Shadow Map Cache when light frustrum is only overlapping a small portion of the mesh
UE - Graphics Features - Oct 22, 2025When adding a spotlight to the scene it does not correctly use cached virtual shadow map pages when the spotlight overlaps a mesh using WPO. This can be most easily observed by entering 'Cached Pag ...
Memory Increase with mouse over Content Browser with AnimBP visible
UE - Editor - Content Pipeline - Content Browser - Aug 12, 2016Memory Increase with mouse over Content Browser with AnimBP visible ...
Custom TouchInterface doesn't fade to Inactive Opacity
UE - Platform - Mobile - Jan 12, 2016Custom TouchInterface doesn't fade to Inactive Opacity User Description: Virtual Joystick always show on screen, even if Time Until Deactive is 0.00001. ...