I can confirm this happening on rare occasions. I have had it maybe 10 times over 10 years in various forms. Actor just locks up.
The trick is to catch it, that's why I never reported it. You have to reset/replace to realise that it is the fix, and then it's too late to report it.
Its very elusive and probably a composite of circumstances rather than a single bug. It could be file system related, as you say yourself, its happened in other softwares.
I will also keep an eye on trying to catch it.