Unreal Engine Issues
Unreal Engine Issues
GeometryCollectionPhysicsProxy::FieldParameterUpdateCallback() not removing invalid Commands, leading to performance issues
UE - Simulation - Visual - Aug 30, 2025GeometryCollectionPhysicsProxy::FieldParameterUpdateCallback() not removing invalid Commands, leading to performance issues. The licensee has provided their analysis: We seem to have stumbled acro ...
r.ScreenPercentage.Editor does not function
UE - Graphics Features - Jun 2, 2016Setting r.ScreenPercentage.Editor does not affect the upsampling/downsampling of the viewport in the editor. Regression: YES - the console command correctly adjusted the screen precentage in 4.11.2 ...
Package fails to load due to EditorOnly data when launched onto Mac or Windows
UE - Foundation - Core - Jun 28, 2017LogPlayLevel: QAGame: [2017.06.28-14.09.14:706][ 0]LogLinker:Warning: Unable to load package (../../../QAGame/Content/UMG/UMG_Sprite.uasset). Package contains EditorOnly data which is not supported b ...
Auto Compute LOD Distance doesn't properly change screen sizes
UE - Graphics Features - Jun 12, 2018Auto Compute LOD Distance doesn't properly change screen sizes. The screen size for each LOD will be exactly the same regardless of the mesh you use with generated LODs. Working as expected in 4.19 ...
When "Support Material Layers" is Enabled Material Instance Parameter Values Reset to Default Value When Override is Unchecked
UE - Graphics Features - Jul 14, 2018If "Support Material Layers" is enabled, every time you uncheck an overridden parameter box in a material instance the value of that parameter will reset to its parent's default value instead of sta ...
r.SupportPointLightWholeSceneShadows Set to False Causes Crash When Trying to Place a PointLight
UE - Graphics Features - Jul 25, 2018If you disable Support PointLightWholeSceneShadows and try to place a point light in a level the editor will crash. Current work around is put shadows to low from engine scalability settings. Wor ...
Using a Sub Anim Instance causes a "Sub Instance Loop" Compile Error
OLD - Anim - Aug 7, 2018Using a Sub Anim Instance causes a sub instance loop error when referencing another Animation Blueprint. This is a regression from 4.19.2 (CL-4033788) as it complied without error. This issue was r ...
Setting a console variable interacts with window state
When the game window is set to be windowed and maximized, setting a console variable changes the window's state from being maximized to its default size. This is a regression as it is working as e ...
UMG Drag and Drop stops working in a Packaged or Standalone Game
UE - Editor - UI Systems - Aug 20, 2018Drag and drop operations just become broken on packaged builds or launching stand-alone, despite working inside the Editor (PIE). This is a regression from 4.19.2 (CL-4033788). This issue was repor ...
EQS Context modifications Crashes Editor
UE - Gameplay - Aug 29, 2018Making changes to the EQS Context and moving the Testing Pawn, the Editor crashes. When reopening the Editor, the context is set and the query does generate from that actor/location. This issue was ...