Whoops, posted in the wrong tab; please wait for update
Edit: Here we go...
Steps to reproduce:
- hit either "reply" in an existing thread or "new topic" in the topic view (in which case you also have to enter a subject in addition to the steps below)
- draft some text
- open attachment menu
- add attachment in whichever way but don't hit "upload" or "upload all" yet
- hit "post"; receive javascript(?) warning that an attachment isn't uploaded yet
- attempt to change your drafted text (for whatever reason); notice the textarea can't be click-entered
- (cancel-deleting or upload-ing the attachment doesn't change the situation)
- (you're forced to either "draft" the text (which will fix the issue, but you have to re-add your attachment), "post" the unedited (with or without the attachment) and then edit it afterwards, or reload the tab and start from scratch (you can still mouse-select and copy your text)