Unreal Engine Issues

Material Instance values lost when using Material Parameters inside of multiple Material Functions

Material Instance parameters (that derive from parents using material functions) can have their data shifted or not saved. ...

Hiding and showing a level with painted foliage at runtime caues the foliage to disappear

Random Deviation of 0 causes service node instantiation fail

Licensee has 4 Services that aren't being initialized with their respective Tasks when they Plays in Editor. If the Behavior Tree is opened first, the warnings do not appear. All 4 of the Services h ...

Syncing a texture from source control while a material editor sampling it is open will crash the editor

Syncing to source control will cause a crash if a texture is synced that is being referenced by an open material editor, even if the texture hasn't been modified. A quick solution may be to close th ...

Vertex Color Information Lost on Editor Restart

This is a regression. In 4.19 and Main (CL 4008322), vertex color information does not save properly and data is lost when editor is reopened. Creating project from scratch instead of copying over f ...

Editor Crash When DFAO Viewport Has Zero Area

I've reproduced this crash in 4.16, 4.17, 4.18, 4.19, and Main. Per licensee: The editor crashes if distance field ambient occlusion is enabled and a viewport is resized to have zero height. Th ...

Cannot run any packaged project if "Force all skinned meshes to recompute tangents" has been enabled in an unrelated project

Enabling the "Force all skinned meshes to recompute tangents" sets the value at a Windows user level so that it affects all UE4 projects opened by that user, including unrelated packaged projects. T ...

DFAO does not support World Origin Rebasing

Mobile landscape rendering corrupted in 4.19

Cannot use code class if it is placed in a folder named "Device"

C++ classes that are located within a folder named "Device" cannot be seen or used within the Editor. The classes cannot be found within the Content Browser, and they cannot be used to create Bluepr ...