Unreal Engine Issues

UnLit materials are not masked out on mobile deferred lighting pass with depth prepass enabled

Final Gather Quality Post Process setting causes severe rendering issues in the Stack-O-Bot project

When opening the Stack-O-Bot project in 5.0 Preview 1, the project has a rendering issue where bright shimmering lights appear all around the screen. I discovered that this is due to the PostProcess ...

References to recompiled Blueprint CDOs that exist outside of the immediate class hierarchy are not being replaced during compilation.

Currently, the Blueprint compiler will only update references to a reinstanced CDO/archetype object if it falls within the immediate hierarchy of the Blueprint class type OR if it's a component temp ...

ABI break in Pixel Streaming appearing in Packaged builds

WebRTC binaries do not have the correct headers and the headers need to be updated. Linux binaries also need to be updated to match the new headers. ...

Applying Transforms to Foliage causes the Foliage to flicker and become invisible when placed

Scale, rotating, or translating Foliage causes the Foliage to flicker and become invisible when placed. Making several adjustments then undoing the last change causes the foliage to reappear with th ...

Adding Regular Expression information to the project.build.cs no longer works

This worked in previous releases, but changed around 4.27.2 and Early Access. This prevents users from using C# regular expressions. ...

Misleading error message while attempting to drag in a BlueprintCallable Function into an Event Graph

An error message informs the user that a function does not have the BlueprintCallable keyword if the same function is using a  native to blueprint communication keyword. The function/keywords are b ...

Incorrect behavior when bAutoCalculateSpline==true for a Spline IK node

UDN user reports that the calculations used to auto-calculate spline points is incorrect, solution supplied in the UDN ticket. ...

Linux crashes in the Project Browser without using the -nocef command

When opening Unreal Editor on Linux, the Project Browser opens but is completely unresponsive. Shortly afterwards the editor will crash. If you use the -nocef command when opening the Editor, everyt ...

Set Editor Property node no longer works with Material Instances in UE5

This is a Regression. Using an Editor Utility Widget to set properties on materials via Set Editor Property doesn't work in UE5 as it did in UE4. ...