18.3.1 app icons black background

Most but not all of my app icons now have a black background since the 18.3.1 IOS update. Yes, dark mode is on but my icons have not had black backgrounds before this update. Yes, the black backgrounds go away if I change to light mode but I prefer dark mode.

I would appreciate any ideas.

P.S. I also had to delete one but not all yahoo email accounts to get that one email account to function again. This is the first time I’ve had issues with an IOS update.