Unreal Engine Issues
Unreal Engine Issues
Crash in MaterialInstance when deleting a layer
UE - Graphics Features - May 4, 2021Repro from licensee here - [Link Removed] ...
Orthographic Rendering - Lumen Reflection Artefacts
UE - Rendering Architecture - Apr 28, 2023Fail to compile with Added AIController class
UE - Foundation - Core - Jan 14, 2015User fails to compile code template after adding AIController code to project. Regression: Not a regression happens in 4.6.1 CL-2386410 Setting up Mono Building MyProjectEditor... Compiling game m ...
Key precision problems on some short animations
Tools - Apr 5, 2016Please see attached UE4_anim_interp_bug.fbx for a second example. This works as expected in 4.7 and 4.8 I've got a couple different users reporting this now. I suspected animation compression to ...
List Referenced Objects does not show referenced objects for a .umap asset
Tools - Apr 1, 2016Opening the Reference Viewer for a level then right clicking on the level and selecting List Referenced Objects displays a message prompt stating "Object 'LevelName' doesn't refer to any non-ignored ...
Packaging Project with Nativize Blueprint Assets Prevents Overlap Events from Firing
UE - Gameplay - Blueprint Runtime - Mar 31, 2016Currently, I have been unable to reproduce this issue outside of the user's project that is provided in the repro steps. Packaging a game that has the experimental feature Nativize Blueprint Assets ...
Sublevel moves away when undoing the level visibility change
Tools - Nov 21, 2016When you have a sub level with some level transform, changing its visibility then doing undo makes the sub level moved away as if the level transform applied twice. I could repro the issue in 4.13. ...
Mutable custom versioning issue from 5.5->5.6
UE - Anim - Mutable - Sep 19, 2025In 5.6, a handful of new entries in `FCustomizableObjectCustomVersion` were added, including `SetDisplayNamePropertyAsPinNameOfTableNodes`. Looking back at the history, `SetDisplayNamePropertyAsPinN ...
Reducing Resolution Scale affects Selection Accuracy in Viewport
UE - Graphics Features - Nov 17, 2015When reducing the Resolution Scale the selection accuracy is reduced greatly, and makes it difficult to click and move objects in the viewport when PIE or Simulating. ...
Instanced Static mesh does not LOD at the same screen distance as standalone mesh
UE - Graphics Features - Nov 11, 2014DESCRIPTION: When using instanced static mesh component in a blueprint that has LODs the normal distances for LODs are not reflected for the instanced static mesh component. AH Post: https://answe ...