Unreal Engine Issues

Invalid Subsurface Scattering Color when using Per Pixel Shading Model and non-default material layers

It appears as though when adding material layers to a material instance that uses the FromExpression shading model, the subsurface color ends up white. If you add a DebugFloat3Values and output it t ...

Crash when editing category name in the emitter summary

Take recorder doesn't recording looping montage notify states correctly

Anim notifies in montages aren't recorded correctly. This seems to be because FAnimationRecorder::RecordNotifies doesnt handle it correctly. Reported by UDN. ...

Converting from possessable to spawnable with override instance data can cause the actor to shift

Actors when converted to spawnables are given a transform track, and the default position of doesn't seem to be saved to the template for blueprint actors. Compare the above behavior to a static mes ...

[AI] Using a Reference Value for scoring in an EQS test produces the opposite effect of its tooltip.

An EQS Query scores the tests using reference values opposite of how the comments and tooltips describe. It will score items closest to the referenced value lower than those further away, but the ex ...

[MetaSounds] - Input Parameter Settings revert to the default after a MetaSound becomes virtual

On restarting from Virtualizing, any parameters set previously on a MetaSound are ignored and the MetaSound restarts with the default values. This does not behave this way with Sound Cues, in which ...

[AI] Navmesh does not generate correctly on a plane that has a slope of 45 degrees or more.

Navmesh generation appears to have issues handling terrain and planes that are at 45 degree or steeper angles even if the agent max slope is set to allow for such movement. While the issue occurs at ...

Crash during package save due to the async text mesh build in Text3D

Saving a package in the editor while there is a queued text mesh build will cause a fatal error because the build will execute during the save, and creating objects while saving is not allowed. This ...

Material Instance used textures list shows sample textures used as Input Preview Textures within Material Functions

Nanite Meshes with WPO exhibit TSR smearing with Velocity Write during Depth Pass, regardless of Mobility

I set up a test project with different combinations of Nanite/Non Nanite, Movable/Static, and instance and component types, and the only case that seems to not smear at all are the non-nanite Movabl ...