Object references do not save for local variables within a function library when set as a default

UE - Gameplay - Blueprint - Jul 9, 2015

As an example, if a user sets a material variable's default within a function library it will not save. The Variable will be set back to "None" after hitting the compile button. ...

Light min roughness set to 0 will create black artifacts on materials with negative roughness value

UE - Graphics Features - Aug 9, 2016

Any light's min roughness setting creates black artifacts with materials who have a roughness value less than 0. The min roughness must be =< 0. ...

Crash when opening or editing a DataTable with a Row Structure that contains a Curve

UE - Editor - Workflow Systems - Nov 9, 2023

If a DataTable Asset is created with a Row Structure that contains a member variable of type Curve, the Editor will crash when attempting to open it while it has no rows. It will also crash when edi ...

ResavePackages commandlet breaks sublevel translation

UE - Gameplay - Feb 26, 2019

Rebuilding lighting with commandlet will move hidden sublevels Confirmed in 4.23 MAIN @ CL 5194133 ...

CreateDynamicMaterialInstance will pull from the base rather than overridden mesh on SkinnedMeshComponent when run from construction script

UE - Framework - Blueprint - Feb 6, 2025

When UPrimitiveComponent::CreateDynamicMaterialInstance is called on a skinned mesh, and the input material is invalid, we call USkinnedMeshComponent::GetMaterial to get the base material on the exi ...

If the DataLayerAsset name or asset path changes, Actors registered to it will ignore the DataLayer's settings

UE - World Creation - Worldbuilding Tools - Feb 5, 2023

If you change the DataLayerAsset name or asset path, all Actors registered with that DataLayer will ignore that DataLayer's settings. Specifically, even if you set the DataLayer to the Unloaded stat ...

Spring Arm Component attached to a Vehicle in a multiplayer environment will cause the Vehicle to jerk forward and backwards

UE - Networking - Aug 11, 2016

Spring Arm Component causes vehicle to jerk forward and backwards in a multiplayer environment. ...

Deleting animation key values of ParagonKhaimera's 1D BlendSpace while the animation is previewing in Animation Editor will result in Engine crash

OLD - Anim - Jan 30, 2019

Deleting ParagonKhaimera BlendSpace 1D key values while the animation is previewing in Animation Editor will result in Engine crash. ...

Importing a Binary version of an FBX with the option Use T0As Ref Pose enabled will cause deformations of the mesh

UE - Editor - Content Pipeline - Import and Export - Jun 3, 2019

When importing a binary FBX with the option Use T0As Ref Pose enable it appears that some models will be slightly deformed (see attached image). ...