Hi there!
I don't know when this changed— I stopped using Trello a little while ago and came back— but if I need to edit a card description...I can't.
Used to be, you write a description on a card, save it, re-read the four-and-a-half-thousand typos, click edit, and fix all of them. Or create a card with a description, come back and add more detail or nuance when the client gets back to you.
Now, when I write a description and save it, if I hit edit, my existing text is gone and I have a blank box. If I save, my original text is gone. If I try to highlight my text so I can copy it it, it opens the blank editor.
This seems...less useful. How can I edit my descriptions while preserving the existing text?