Question, did you do a restore settings from a Nova backup?
I restored settings from backup that came from my old Note 4 - I was having similar issue (UI Crash) until I cleared app data/cache and just started fresh with Note 8. I've been thru most of the Nova beta versions and this has happened a few times.
If not then no need to reset, just make sure you let the Nova team know... they are quick to resolve fixes or bugs.