Unreal Engine Issues
Unreal Engine Issues
PlacedEditorUtilityBase class no longer ticks in the editor
UE - Gameplay - May 30, 2018This is a regression as it is working as expected in 4.18. When using the class PlacedEditorUtilityBase to draw a debug sphere, it doesn't appear in the editor in 4.19 and 4.20. ...
User created constraints have a default joint name of "UserConstraint" that cannot be edited
UE - Simulation - Physics - Dec 6, 2018Constraints created by users are all given the same Joint Name of "UserConstraint" and it cannot be edited. This makes referencing these joints individually impossible. Regression?: No This occurs ...
Rotator visual helper appears in local Presentation exports
TM - Tools - Nov 6, 2025Reported in SF [Link Removed] The Rotator animator's visual helpers will be visible in locally exported Presentations when it should be hidden. This does not affect the Translator animator. ...
Font advance and fallback font metrics have issues in 4.16
UE - Editor - UI Systems - Slate - Jun 5, 2017There were some font regressions in 4.16 that we've since fixed (CL# 3456916 and CL# 3425681). These are affecting live users so we should get them into the next 4.16 build. ...
Lighting Channels Do Not Function with 78+ Lights on Actor
UE - Graphics Features - Oct 20, 2017Lighting channels do not function when the number of lights affecting actors is 79 or higher. Any number of lights that is 78 or fewer will honor lighting channel assignments. ...
Cloth simulation doesn't work correctly if Compute Skin Cache is ON.
UE - Simulation - Physics - Character - Aug 16, 2018It seems that cloth simulation doesn't work correctly on 4.20 if Compute Skin Cache is ON. We can easily repro it with Content Example [Link Removed] Is this by design? ...
Niagara Translucency Sorting Issue with GPUCompute Sim
UE - Niagara - Sep 7, 2018Niagara translucency sorting mode doesn't apply to a particle set to be GPUCompute Sim. Found in 4.20 CL# 4302132 and 4.21 CL# 4348893 ...
Child Actors are not replicated to clients when the parent blueprint is nativized
UE - Gameplay - Feb 22, 2019Child actors do not replicate properly to clients when their parent blueprint is nativized. Regression?: Yes This did not occur in 4.20.3 See also [Link Removed] ...
Light rendering becomes broken when at a distance of ~1000000 from origin
UE - Graphics Features - Oct 7, 2020Tested at X=20,000 with no issue Tested at X=500,000 with no issue Tested at X=1,000,000 issue occurs NOT A REGRESSION ...
NPC - Texture Sample DI does not work on Niagara Parameter Collections
UE - Rendering - Architecture - Niagara - Nov 8, 2023Texture sample DIs no longer work when used with Niagara Parameter Collections. This seems to affect Volume Texture DIs based on customer reports, but I have not confirmed this. ...