Skeletal Mesh breaks perspective view in Physics Asset Tool.

UE - Simulation - Physics - Feb 19, 2016

When importing licensee's provided asset the Physics Asset generated will completely break the Perspective View in PhAT. The other orthographic views will work as intended though. The licensee has ...

Material Previews Reflection skybox are broken in 4.12

UE - Graphics Features - May 3, 2016

Materials are rendering now in the preview pane with artifacts caused by the change in the reflection skybox. This can clearly be seen in 4.12 and later by enabling the reflections view in the previ ...

Epic Mannequin's Material Does Not Render Correctly On Intel HD Graphics

UE - Graphics Features - Feb 1, 2017

The Epic Mannequin no longer renders correctly when using an Integrated Intel HD Graphics 4600 GPU. The character will either have parts of his body hidden(4.14) or completely black(4.15) depending ...

Crash when Reimporting SpeedTree asset with Billboard Material reset to the default World Grid Material

UE - Editor - Content Pipeline - Import and Export - Feb 7, 2017

A crash occurs when reimporting a SpeedTree asset after clearing the material billboard element and setting it to the default world grid material. The licensee reporting the issue mentions to worka ...

Regression: Visibility property is not seen in the animation track in UMG

UE - Anim - Sequencer - Mar 6, 2017

Visibility track in 4.15 launcher version is not visible. Converted projects from previous version which already had this track, but cannot create new one. If I add Interp keyword in the UPROPERTY, ...

Previewing Node in Material Editor Produces Unexpected Output with DX12

UE - Graphics Features - May 16, 2018

Per Licensee: Since we switched to DX12 we started to see strange behavior in material previews. I was able to reproduce the problem in UE 4.19 vanilla as well. We usually have to force recompilin ...

Behavior of NewBinding and ExistingBinding are different inside Shot track

UE - Anim - Sequencer - Jul 6, 2018

When using NewBinding, the bind does not work properly with the level sequence specified by ShotTrack. The cause is that Guid of ExistingBindingID will be empty when passing through ActorPicked in ...

Set Range Animations imported from 60Hz frametime is halved

Tools - Aug 3, 2018

Reported by a licensee on UDN, this bug is fallout from the fix made for the following Jira:[Link Removed] - Fbx importer: animation range import is broken when importing 60Hz anim The attached ass ...

Rare assertion comes up when cooking if sequencer camera track has only additive transform track

UE - Anim - Sequencer - Mar 2, 2020

If a camera track has only additive transform track, some functions return uninitialized F3DTransformTrackToken made by default constructor. It causes a rare assertion. Please take a look at F3DTra ...

Undo function breaks local variables in Blueprint Function after compiling

UE - Gameplay - Oct 8, 2020

Blueprint functions appear to correctly associate local variables when renaming the function. However when undoing a rename with ctrl-z the local variables appear to lose their association. Redoing ...