Unreal Engine Issues
Unreal Engine Issues
Specular/Anisotropy problems with Nanite Meshes
UE - Rendering Architecture - Jan 11, 2024Specular highlights can disappear with clearcoat materials, when "Clear Coat Enable Second Normal" is enabled ("r.ClearCoatNormal"). ...
GAS: Creating an UGameplayEffectUIData blueprint will lead to a failed Data Validation
UE - Gameplay - Gameplay Ability System - Aug 16, 2024The logic for data validation on UGameplayEffectComponent expects it to be owned by a UGameplayEffect. Any Blueprint derived from UGameplayEffectUIData (child of UGameplayEffectComponent) fails this ...
Modifying the view size can cause TSR history to allocate large amount of memory
UE - Graphics Features - Sep 4, 2025When animating the split fraction of a splitscreen experience, TSR causes an significant increase in UAV memory. In PIX, this appears to be caused by TSR allocating the history multiple times when ...
Default component instances do not update on "Reset to Defaults"
Tools - Apr 29, 2015When a component that is included in a blueprint by default is set and placed in the viewport, the instance of the blueprint is not updated in the viewport if the yellow arrow is used to reset the c ...
Open Level opens previous level in Launch mode
Open Level does not properly work in Launch Game. Instead of streaming the intended level, it streams the previous level. ...
Details panel is very slow when there are many items in an editable array (even if hidden) (was Tile Selection Lag within Tile Set Editor)
Tools - Jun 22, 2015Selecting tiles within the Tile Sheet Editor becomes laggy after changing the size and spacing of the tile set. ...
Enabling Tessellation on Materials in 4.11 causes geometry to Disappear
UE - Graphics Features - Dec 23, 2015Any material that already exists in 4.11p1, with tessellation enabled, causes assigned geometry to disappear. Any material created within 4.11p1, with tessellation enabled and a base color, causes t ...
Possessing a vehicle results in unexpected physics behavior
UE - Simulation - Physics - Oct 8, 2015When possessing a vehicle, if you are standing on top of it with a character, once you begin to drive away, the vehicle will begin to be drawn back towards the character as if it is attached somehow ...
Auto Convex Collision will cause crash when using significantly small meshes
UE - Gameplay - Dec 16, 2015A hard crash can happen when applying auto convex collision to a complex mesh that is below a certain build scale or screen size. The meshes that cause this have higher poly counts and increasing th ...
Set tracking origin has a 90 degree offset between Floor and Eye level
UE - Platform - XR - Jun 15, 2017Set tracking origin has a 90 degree offset between Floor and Eye level. When switching the Setting for the Set Tracking Origin Node from Floor level to Eye level, there appears to be a 90 degree dif ...