Wurzelkraft: With script enabled:
http://i.imgur.com/fO8dzrR.png (can't click the button anymore after the fourth file)
With script disabled:
http://i.imgur.com/E5prdvb.png (can click button; "correct" error message thereafter)
I'm confused.
First off, I've also noticed the layout and position of the various buttons (attach, cancel, post) with and without the script enabled.
But the fact that the attach button is inactive when the script is enabled, is due to the files being placed
on top of the button - look closer, it's evident in your screenshot. If you go to edit your post, the button gets on top and you can add one more file.
If the file-names are shorter, than they don't overlap the attach button and it's still clickabale, regardless of the status of the script.
I'm sorry, I wasn't clear. I meant if there's a distinction between them in the Preview window while one is still typing their reply.
I'll edited my question to reflect that and also attach a screenshot, sorry again. :$
EDIT: typos