iOS AutoFill not working

I’ve had restore my iPad so have a completely fresh install of iPadOS and only a few apps installed.

The BW app itself works as expected, I can open it up, search, copy & paste. However, when I try to autofill in Safari or an app it either does nothing or a strange shadow appears, take a look;

I have the settings for autofill set to BW, I’ve uninstalled the app and reinstall burt still happening.

Any ideas?