Same problem in my opinion, I had a problem opening an older version before, now saving

I open a file with good modifiers, save as another file. Close and open Bleder and I already have broken modifiers

I did notice one thing - when my open file closes unexpectedly a couple of times - mostly while rendering - the modifier is broken again.

ok, thanks :)

Hi. I have a problem with modifiers.
In Blender 2.92 some modifiers are no longer visual, if I click on a modifier it shows up for 5 seconds and then disappears again.
If I copy the object and paste it into a new file, everything is fine.
If I open Blender 2.90, everything is fine too.

please look for this file - everything will be clear
https://www.dropbox.com/s/x5l35jgbj4kw569/bugSubsurf.blend?dl=0

Sorry for that you waited so long.