Unreal Engine Issues
Unreal Engine Issues
Division by zero causing NaN/Inf on USkeletalMeshComponent::UpdateRigidBodyScaling() when setting scale to zero and back
UE - Simulation - Core - Feb 11, 2026Up to UE 5.5, skeletal mesh physics did not get updated when the component's scale changed. This was improved on January 2025 with CL 39190335, which addressed [Link Removed] ...
Graphic Artifacts on AMD GPUs When Mesh is Scaled to Large Size
UE - Graphics Features - Apr 5, 2018This issue has been observed in 4.18.3 as well as 4.19. See attached screenshot showing scene from 4.18 on Nvidia, compare to attached GIF showing same scene on AMD card. ...
Game start slowing down when there are more than 10 sprites in the level
UE - Gameplay - Paper2D - Apr 10, 2018Sprites seem to be drastically affecting FPS in 4.19 projects on Mac devices. ...
Owen's leg intersects his jacket on ContentExamples Animation map
Docs - Samples - Aug 19, 2016Owen's leg can be seen sticking through his jacket on station 1.4 of ContentExamples Animation map. ...
The layer option for grid panels do not appear to be having an effect on draw order
UE - Editor - UI Systems - Feb 1, 2016It appears that users are unable to order widgets within a grid panel so as to set what widget that would like to be in the front. The layer option in the details panel says that it affects draw ord ...
[CrashReport] Fatal error: Cast of nullptr to Actor failed - UE4Editor_CoreUObject!CastLogError()
Tools - Jul 19, 2017This is a common crash affecting users in 4.16, and has been occurring since at least 4.14. It has affected more than 400 unique users, unfortunately they have provided little information. User Des ...
Creating a new collision preset changes the collision of the capsule for third person character blueprint
UE - Simulation - Physics - Jan 7, 2020Creating a custom collision preset changes the collision of third person characters capsule component. Tested in: 4.23.1 CL#9631420 4.24.1 CL#10757647 4.25 CL#10889200 ...
Normal of Skeletal Mesh is incorrect when Recompute Tangent is used when Skincache is enabled
UE - Graphics Features - Aug 12, 2020This issue occurs in Skeletal Mesh depending on the model when Skincache is enabled and affects the rendering. ...
Black screen caused by depth of field on several mobile devices
UE - Platform - Mobile - Apr 24, 2017DOF does not display correctly(screen turns black) on several mobile devices. I could repro the issue on:Samsung GALAXY S7, Android 6.0.1Xperia X Performance (F8132), Android 6.0.1 ...
Light components stay visible if "Actor Hidden In Game" is checked
UE - Graphics Features - Feb 6, 2017Light components stay visible if "Actor Hidden In Game" is checked. This issue occurs even when other components (such as a static mesh) are no longer visible. I tested with a static mesh component ...