Some bugs I came across recently:
- Invoices are sent out to all contacts marked on it, but payment receipts are sent out only to the first (or one contact)
- The Windows app logs you out if your credentials change (intended feature), but if the server is not reachable (for example, if the domain expires, etc.), the app loading screen keeps spinning endlessly forever and you need to go to the app settings on Windows and reset the app. I think after a few attempts it should throw an error with an option to try again later or change/update the credentials if needed.