Thank you @jason!
Another question: in the previous version, there was a status indicator showing if the changes are synced to Google Drive, but in the current version it is gone. Not that I need it, if the saving is reliable and instantaneous - that indicator is a nuisance, but just wanted to check this is also expected.
Thank you for this very nice update. I am particularly happy about the rectangle highlight issue, since it is often the case that text highlight does not work reliable (probably due to document formatting, since I see the same behavior for those documents in Mac Preview), and rectangle will be very handy in those cases.