This thread is a few months old but it's still on the front page so I wanna drop my two cents in here.
I only just today updated to 1.3.6 (since I ran into a bug in 1.3.5 that I couldn't reconcile) and of course I ran into the
theme change and didn't like it. Now it's not that it was bad, it's that I typically just dislike change and there isn't a way to change the
theme in Deluge to my knowledge without first installing external tools to modify deluge. I also don't like the shape of the buttons and all that but my biggest thing is that its just so BRIGHT. I would love (but don't expect this to happen) a simple little drop box or option somewhere that would let me switch between something like a basic white, light blue, dark blue etc
theme list. They don't even have to be different except in colors. I operate my computer in a dark room so the bright blue (much like this forum) hurts my eyes.
Other than that I have no problems deluge since it's worked perfectly up till now.
Incidentally this torrent
http://www.nyaa.eu/?page=view&tid=68521 is the one that was causing my issues, typically you just click download and a little popup box opens to ask me [cancel] or [add], but in this case the box just flashed and I couldn't add the torrent. The solution was to click add torrent, click on from URL, and paste the link in there, and then it worked. I have no idea WHY it worked only this way as this is the first time I encountered it, but the original bug persisted between both 1.3.5 and 1.3.6
I'm only providing that just in case it could possibly help you find a problem to fix, my real reason was the
theme brightness.
I'd be willing to try to enable logging and trying to replicate the issue if necessary. Just reply to this post. I'll check back once a day for a week or so.