Today I had a weird glitch with caja:
It looked like it got confused which object should go where and I ended up with a video-thumbnail on my main icon bar replacing the forward-fold-out-button , like this :
I admit, it looks nice 
It reminded me of this bug that haunted me and spontaneously disappeared a few days later ( more than a month ago):
This is on UM22.04 only, and I more or less suspect a GTK issue.
I know almost nothing about GTK so I can not visualize yet how its parts connect together.
I would like to know: what is the probability of this having any influence (on the integrity of) files on disk or processes in memory ?