Hi,
I am experiencing problems with Arfoundation 4.x on Android, it seems like the entire World is weirdly rotating, plane visualisation however seems to work correctly, but any object which is placed is rotating. I don’t experience this issue with Arfoundation 3.x. I also cannot use ARFoundation 3.x in unity 2020.3 since the package manager is installing a non-matching ARSubsystem 4.x.