So, I did have CONTEXT() function in my example app.
EDITED: Disregard the below
Have removed them for the affected view and still see the issue. I do have inequality. I can test to see if removing those make a difference.
EDITED: I have realized that my changes were not getting saved due the editor “version already exists” bug.
After properly saving the app with the CONTEXT() function usage removed, I DO NOT see the issue - meaning the formats are appearing as expected when navigating BACK to a formatted view.
Reapplying the CONTEXT() function to a format rule on just a single column resurfaces the issue for just that column.
So, it seems that the format rules are removed when navigating away from the view when with CONTEXT() they do not apply but are NOT getting re-applied when navigating BACK to the view when the CONTEXT() does apply.