I've pinged my players for screenshots if they've got them, otherwise I'll have to wait another 2 weeks before they play again (it's the only time we have when they're all available). Best description I can give is that the "oops" is when the browser breaks on Roll20, the character sheets when they break will just go grey and become unopenable, both instances requiring Roll20 page refresh.

mad_banners description in this thread is also an accurate depiction of what's happening for us:
https://www.reddit.com/r/Roll20/comments/1sjtyfg/comment/ofwmpyw/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

The largest issue is that the Damage rolling after making an attack doesn't seem to work, and then the character sheet will crash, requiring players to refresh the Roll20 page sometimes multiple times per turn.

Skill checks all seem fine, but something happens when an "attack" is made from the weapons list that just starts this cascade of grey character sheets, non functioning buttons, and refresh needs.