User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36
Steps to reproduce:
Edit a new message and enter a subject and some text or reply to an existing message, and save it to drafts, using the "Save" button.
The subject of the saved message is saved as three dots ("...").
The subject should have been saved as entered. It was working fine until the recent update to version 78.7.1 on Ubuntu.