Ambient Occlusion does not function with Forward Rendering enabled

UE - Rendering - Feb 24, 2021

Ambient Occlusion does not seem to function when enabling Forward Rendering. I tested the level without Forward Shading and could notice a visible difference in the shadows when Ambient Occlusion wa ...

Disabling Shadow Denoiser causes raytraced shadows from Rect Lights to disappear

UE - Rendering - Lumen - Nov 6, 2020

Disabling Shadow Denoiser causes raytraced shadows from Rect Lights to disappear ...

Android build fails with GPU Lightmass plugin enabled

Platform - Mobile - Nov 5, 2020

Packaging for Android fails with the GPU Lightmass plugin enabled. A customer reported this and I was able to successfully repro it, however my callstack was different. I'm attaching my logs and cal ...

Missing scale for tangent with morph target

Tools - Import and Export - Nov 4, 2020

There is a bug in the fbx curve import code where we do not multiply the tangent by the scale parameter. Only the key value is currently scale. In 4.25 there was a hardcoded 0.01 scale but it was w ...

Convert to function to event incorrectly shows up when editing BP Interface Blueprints

Gameplay - Blueprint Editor - Oct 29, 2020

The BP interface graph shouldn't be able to convert functions to events because they are inherently all function graphs.  ...

Latent Actions do not execute if the blueprint name contains non-english characters

Core - Oct 27, 2020

REGRESSION: Issue started occurring with 4.25.4 Blueprints with non-English characters in their name will not trigger latent actions. The following warning appears in the log in this case: LogScr ...

Linker exception opening project project after updating to 4.25.4

Gameplay - Blueprint - Oct 27, 2020

User has encountered an exception opening their project when they updated from 4.25.3 to 4.25.4. No repro, log or test project is given at the time. ...

Editor crash when ticking then unticking "Toggle Visualization" in a Google Resonance Spatialization Settings window

Audio - Oct 23, 2020

This is a user reported crash, I was able to re-create in 4.25.4. I'm also assuming this happens in 4.26, however there is a current blocker that stops me from opening this project in 4.26. Linked ...