Unreal Engine Issues
Unreal Engine Issues
Auto Wrap Text breaks inside of a ScaleBox
UE - Editor - UI Systems - Aug 22, 2018Widget Elements within a scalebox are inappropriately resized upon scaling. Tested in 4.19.2 (CL - 4033788), 4.20.2 (CL - 4306439), 4.21 (CL - 4305553) ...
Mesh is not displayed when duplicating Hierarchical Instanced Static Mesh
UE - Graphics Features - Nov 5, 2018Mesh is not displayed when duplicating Hierarchical Instanced Static Mesh. It is displayed by editing the Transform of Instances. This problem does not occur in 4.19. It seems to happen in 4.20 and ...
Movable point light disappeared by MinScreenRadiusForLights and appeared back looks deemed.
UE - Platform - Mobile - Jun 25, 2021The movable point light is abnormally lit when it disappeared by the setting of r.MinScreenRadiusForLights rather than "Max draw distance" and appears back. After you disable and enable the "Affect ...
Creating a function with parameter type TEnumAsByte<MyEnum> will crash while compiling
UE - Editor - Workflow Systems - Jan 11, 2022This is a regression.This does not affect UE5. Creating a function with parameter type TEnumAsByte<MyEnum> will crash while compiling. In 4.26 and UE5 the code compiles without issue, and the user ...
MemReport does not seem to respect mesh streaming
UE - Rendering - Architecture - Aug 6, 2024The function "FStaticMeshLODResources::GetResourceSizeEx(...)" does not take into account that the buffers might be emptied, due to Mesh Streaming. This causes "obj list" to report sizes larger than ...
[AI] Area Class to Replace does not work on SplineNavModifierComponent
UE - AI - Navigation - Jun 16, 2025The SplineNavModifierComponent does not have the same behavior as regular nav modifier components where the modifier can specify that it only replaces a given NavArea class. Setting the area class t ...
Crash when using StaticDuplicateObject with mismathced Source and Destination class types
UE - Foundation - Jun 19, 2025Starting in Unreal Engine 5.4, StaticDuplicateObject internally switched to using Unversioned Property Serialization (UPS) for performance reasons. However, UPS assumes the source and destination ob ...
Crash Occurs When Creating Pose Asset from an Animation in Persona
OLD - Anim - Feb 1, 2018Engine crashes when creating a new pose asset in persona using the Create Asset option -Tested with walk, idle, and run anims -Didn't crash only once out of the several times tested with the Third ...
Mutable references MetaHumans heads directly, but DNA Assets are private
UE - Anim - Mutable - Sep 18, 2025When we switched our project to 5.6.1 This error appeared on build. The compilation of the Mutable assets in the editor is not reporting any issue. ...
Text block Outline cropped out at large sizes
UE - Editor - UI Systems - Mar 8, 2017Text block Outline cropped out at large sizes. This affects Grid Panels and was additionally tested with Horizontal boxes with the same result Regression: This issue does not occur in 4.14.3 Binary ...