Definetly a Undo function or something in the Card Popup (when I expand details from a table row). I had a text field I wrote several paragraphs in and due to some odd and random keystrokes I lost all the text. I hit Command Z on keyboard but nothing. Gone forever.
I typed it out in the Expanded textbox view. Then while in the Card Popup I think I hit Enter to start a new line and then Backspace or something like that. Curser was on the very last line. Text gone forever