After updating to Unreal Engine 5.7 I noticed, that the BackgroundBlur widget no longer works correctly. As soon as the BLur strength is set above 0, the widget becomes grey instead of blurring the bg.
The Blur widget covers the entire screen, it worked corectly in previous UE versions.
I had to update it to 5.7 because older engine versions require older Xcode versions, and with my current Xcode 26.2 Unreal wouldn’t allow me to package the project.
Has anyone had this issue in 5.7 or knows a workaround?
Hey!
I just saw your post and decided to check it on my side. I’m running UE 5.7.4 on Windows, and the BackgroundBlur widget seems to work perfectly fine here (I’ve attached screenshots with Blur Strength at 0 and 5).
Since you’re on Mac/Xcode, maybe it’s a platform-specific issue with Metal shaders in this version? Just a thought, but you could try:
Checking your Project Settings: Maybe something in the Rendering section (like Mobile HDR or specific Post-Processing settings) is conflicting with the blur.
Retainer Box workaround: If the standard widget keeps glitching on Mac, you could try using a Retainer Box with a custom Blur Material. It’s a bit more stable sometimes when the default one fails.
