Other data still a problem. IOS BUG!
This is still a problem in 14.0.1 on my iPhone 12. Wiped phone , restored and data won’t go away. I think it’s log files, and leftover installation files that aren’t being cleaned up by iOS. BUG!
Apple developers need to address this issue. Being a software developer for 40 years I know this should be easy thing to fix. Fix these issues before you keep adding bells and whistles. The integrity of the system is most important.