Bizarre formatting and inability to edit notes

[cmc_webb 1]

For a while now, all my notes have been functionally inaccessible in my Mac desktop app. They show up with bizarrely huge icons that obviously represent some underlying code. The title shows up in a tiny little box in small Courier font. Text is stored in odd little orange-outlined boxes. Nothing is editable once created. This happens with existing notes as well as new notes. Screenshot attached for what happens when I create a new note.

The notes are still readable on the mobile app but nothing works on desktop. It's been months. It's not just a problem with Big Sur - I was running Mojave and Catalina on another Mac and had the same issue. I'm hanging on in the hope of a fix but I am worried that I have seen nobody else talking about this issue so I'm not hopeful. Please let me know if you have any kind of fix for this. 

[jas.ely 0]

I have the same problem and still haven't been able to fix this, if you somehow did fix it please let me know