Unreal Engine Issues
Unreal Engine Issues
GPU Crash may occur when using Nanite Tesselation on landscape with several shadow casting local lights
UE - Graphics Features - Nanite - May 5, 2025The GPU may time out in NaniteSplit when drawing VSM shadows for Nanite Tessellated landscape with in a scene with several local shadowed point lights. The issue doesn't reproduce in 5.6, likely to ...
Skeletal Mesh breaks perspective view in Physics Asset Tool.
UE - Simulation - Physics - Feb 19, 2016When importing licensee's provided asset the Physics Asset generated will completely break the Perspective View in PhAT. The other orthographic views will work as intended though. The licensee has ...
Auto Convex Collision will cause crash when using significantly small meshes
UE - Gameplay - Dec 16, 2015A hard crash can happen when applying auto convex collision to a complex mesh that is below a certain build scale or screen size. The meshes that cause this have higher poly counts and increasing th ...
iOS: No game sound after answering incoming call on iOS
UE - Platform - Mobile - Nov 28, 2016When an iOS device receives and answers a call that interrupts a UE4 game, the game will no longer have audio after the call in completed. Expected: End of call returns to gameplay with audio. Actu ...
Regression: Visibility property is not seen in the animation track in UMG
UE - Anim - Sequencer - Mar 6, 2017Visibility track in 4.15 launcher version is not visible. Converted projects from previous version which already had this track, but cannot create new one. If I add Interp keyword in the UPROPERTY, ...
Previewing Node in Material Editor Produces Unexpected Output with DX12
UE - Graphics Features - May 16, 2018Per Licensee: Since we switched to DX12 we started to see strange behavior in material previews. I was able to reproduce the problem in UE 4.19 vanilla as well. We usually have to force recompilin ...
Behavior of NewBinding and ExistingBinding are different inside Shot track
UE - Anim - Sequencer - Jul 6, 2018When using NewBinding, the bind does not work properly with the level sequence specified by ShotTrack. The cause is that Guid of ExistingBindingID will be empty when passing through ActorPicked in ...
Set Range Animations imported from 60Hz frametime is halved
Tools - Aug 3, 2018Reported by a licensee on UDN, this bug is fallout from the fix made for the following Jira:[Link Removed] - Fbx importer: animation range import is broken when importing 60Hz anim The attached ass ...
Rare assertion comes up when cooking if sequencer camera track has only additive transform track
UE - Anim - Sequencer - Mar 2, 2020If a camera track has only additive transform track, some functions return uninitialized F3DTransformTrackToken made by default constructor. It causes a rare assertion. Please take a look at F3DTra ...
D3D device being lost ( DXGI_ERROR_DEVICE_REMOVED ) on both D3D11 and D3D12
UE - Rendering Architecture - RHI - Aug 10, 2020It is hard to reproduce, but a licensee reported in UDN that it crashed on his computer frequently. He provided two crash dumps with logs which I uploaded here.[Link Removed][Link Removed] OS: W ...