Every time I log in I'm receiving 38g 80s.. I'm not sure how this has happened, but I'll tell what I do know.
Something to note is that I have a completed WQ for Black Rook Hold that has seemed to glitch and says 1/1 on Boss killed but has never rewarded me or went away.. that was done earlier in the week. I completed a Mythic Reg CoS and have been hanging around the outside of the instance since. I've logged in and out to chat with guildies and every time I do I get gold. This could be exploited if someone were to run a program that just logged in and out of WoW (AHK would likely suffice) I'm just not 100% sure how to replicate the situation. If anyone figures this out I'd much appreciate a PM letting me know how as I can understand why this may be posted to elite forums :P
Update: I hearthed to my Garrison, logged out and back in and no Gold was given. Hearthed to New Dalaran and relogged and again, no gold was given.