I started on the quest Piranha! for the anglers. I couldn't catch any fish in the Krasarang Wilds. I tried to fish elsewhere and could not catch anything. I click the bobber when it bounces like normal and no loot box, nothing. I turned off all add ons and deleted the wtf folder ui folder etc. Still having this issue. It did work somewhat. All I got was some vendor trash an old boot or sickly fish. Then it stopped working again.
I tried to fish with an alt in org and did just fine. Caught a cat fish like normal. Seems to be a problem with pandaria.