After updating the theme in wordpresse, the styles periodically fly off on the site by themselves, how to fix it?

Question

WordPress

After updating the theme in wordpresse, the styles on the site periodically fly off by themselves, but if you just go into editing the page and save it again, then all the styles get back up.
I made a backup copy, but unfortunately, I have already made additional changes and new pages. And if you roll back, then everything will fly off.
Is there any way to fix this problem?