Unreal Engine Issues
Unreal Engine Issues
Black screen on Android devices with a Mali 400
UE - Platform - Mobile - Dec 10, 2014When using the Launch on Feature with a Mali 400 Device, the project, once locked on, will appear black on 4.6 and will crash on CL# 2375758. This error occurs on new projects. Tappy Chicken Run fi ...
Crash related to Vertex Painting - MeshPaint!CastChecked<AActor,UObject>()
Tools - May 23, 2016This crash was reported on the UDN. Upon further investigation it has been experienced by a handful of different users throughout 4.11 and 4.12. JIRA logged for tracking despite unknown repro steps ...
XR -ARKit - Tracked Planes are not attached to the real world objects when moving the camera around
UE - Platform - XR - May 22, 2024When the user attempts to place an object on a tracked plane it slides around the environment not staying in the expected place. Using the ARDebugcheck project with the show planes option you can se ...
Sequencer: Camera Lock Breaks After Closing Sequencer and Re-entering PIE
UE - Anim - Sequencer - Oct 9, 2025Viewport camera lock in Sequencer fails to persist correctly after running PIE with Sequencer open, then closing Sequencer and running PIE again. The issue consistently reproduces using the attached ...
Extracting Sprites from Padded Non-Power of Two Textures are Offset
UE - Gameplay - Paper2D - Oct 12, 2015Extracted Sprites are offset when importing a non-power of two sprite sheet, padding it to a power a two mode, and then using the extract function. You can see this offset clipping of the extracted ...
Distance calculation using World Position are rendering incorrectly when packaged or launched for iOS and Android
UE - Platform - Mobile - Jan 15, 2016When using a calculating the distance between the Absolute World Position (Including Material offsets) and a set Vector value, the correct value appears rendering to a texture's UV in PC Mobile Prev ...
[CrashReport] ULevel::GetWorldSettings() - UMaterialInstanceThumbnailRenderer::Draw
Tools - Aug 29, 2017This is a common assertion that has occurred since at least 4.14 and affected nearly 100 users. The callstack is similar to [Link Removed], which was marked fixed for 4.14. User DescriptionsUndoi ...
Physics replicates incorrectly on the Client-Side on sloped surfaces
UE - Simulation - Physics - Jul 30, 2019Replicated objects don't behave correctly on the client-side on slopes when not sleeping. By placing two cubes on one another and slightly rotating the bottom one to create a very gentle slope, the ...
[CrashReport] UE4Editor_LandscapeEditor!TSharedPtr<SWidget,0>::ToSharedRef() [sharedpointer.h:794]
UE - LD & Modeling - Terrain - Landscape - Jul 13, 2017This is a common crash affecting users in 4.16. Additional information is not currently available. User DescriptionsAt the time I was using the landspace sculpt tool with fairly normal settings. ...
[CrashReport] UE4Editor_Persona!TSharedPtr<IEditableSkeleton,0>::ToSharedRef() [sharedpointer.h:794]
OLD - Anim - Jul 13, 2017This is a common crash affecting users in 4.16. User DescriptionsHit undo a bunch of times after re-opening a skeletal mesh where I was trying out painting cloth max distances. Source Context ...