Hello there. For quite some time I have this problem with my UI that after several minutes in game part of the UI starts to bugging out. I suspected ElvUI since it's the major UI change in my addon folder, but I tried to turning off all the addons and turning one by one on to see which one causes the problem. Surpisingly it was WA2.
Problems I have are quite disturbing. Tried googling for it but I couldn't find a right answer (probably don't know how to word it properly).
In details what WA2 does to my interface: After several minutes ingame (I now know that switching in menu from Fullscreen to Borderless window does that aswell) in dungeon journal I can only open instance/boss but I cannot click on the bosses to open their folder (must be done though clicking on their portrait on the map). Also when looking into Premade Group I cannot select anything but Quest group (others dissapier or just black out and cannot click them).
There are some screenshots (in those I had only WeakAura2 enabled, not even WA2 Option or modules other for WA2).
Premade Groups:
http://oi58.tinypic.com/14ch9jt.jpg
Dungeon Journal:
http://oi59.tinypic.com/r07eqc.jpg
It also bugs few others things like when I mouseover my stats (mastery, crit, haste etc.) only first one shows details. Others doesn't show anything.
I wonder if anybody knows the reason why this might be happening and how to sort it out? I would hate to loose my WeakAuras but the bug is really getting on my nerves.
Cheers.