Odd behaviours in LrC 13.3

I upgraded LrC to 13.3 last week and have enjoyed using the new features, on my Windows 23H2 desktop.

However, I am experiencing inconsistent odd behaviours;

. extended wait between clicking 'close' and the backup dialogue appearing, mostly but not always

. twice recently when I re-opened LrC strange configurations of screens and views appeared

. randomly looking through some image file meta-data and noticed 2 fields that should have been "0" but were null; strangely they accepted being edited to "0"

Always hated inconsistent faults, luckily I'm retired now 🙂