【UMG】Background Blur not working at all

Wori3 · October 31, 2025, 1:21pm

UMG Background Blur makes the area completely black instead of blurred.

Possibly because I’m using a Mac, or Maybe I’m setting it up in a wrong way.
The image below shows a test widget. It looks the same in PIE.
Confirmed in 5.5.4 and 5.6.1.

Any help would be much appreciated.

3dRaven · October 31, 2025, 1:58pm

You can try using the overlay node. It might fix the bug. No problems on windows

pie

Wori3 · October 31, 2025, 11:27pm

Thank you for the answer.

Tried it, but didn’t fix the problem.

I’m convinced that it is a Mac issue.

PancakeTiger · November 29, 2025, 5:05am

I’m also seeing this bug on a Mac. Background Blur is fully opaque if Blur Strength is greater than 0. It’s basically binary alpha. Unreal Editor Version: 5.7.0-47537391+++UE5+Release-5.7, Platform: macOS 26.1 (arm64)