Since the patch I'm finding that quite often, if I tick a quest in my log to track, it appears on the screen but not for long and then it disappears and has to be selected again. Either that or it doesn't update totals as I play.
Reloading the UI often helped with erratic quest tracker issues before the patch, but not with this apparently.
I don't use any addons so I don't think it's anything like that.
Any suggestions? It's a small issue but an annoying one!