Low Quality Xcode Snapshot Tests


We have a unit test that create/display view controllers and take a screenshots using XCUIScreenshot. Some of our popups use UIBlurEffect to blur the background. When I run the test locally the blurred background looks as expected but when I run the test on Bitrise it is distorted like in the screenshot below:

I already checked the blurred screenshot is already contained in the xcresults bundle. So it must have to do something with a setting of the Simulator or an iOS API issue.

Any ideas why this might happen?