After updating to 2.7.4, I don’t see the formulas rendered in the editor anymore, but they are still editable. When exporting to pdf, it seems to get stuck on the loading screen (which I found to also happen with the jpg export).
Other things I tried:
Closing and restarting Bear
Creating a new note with new formulas
Rebooting my device
I wonder if updating iOS would change anything.
Editor screenshots and export screenshot included.
I hadn’t heard of that one, though after you mentioned it, I tried all the export options for my note with formulas, and it got stuck on pdf, docx, jpg, and epub.