After 6.2 coming out, my HB got too much bugs. 1. It takes me about 10mins to wait HB start. 2. HB does automatically drops out while im in 2s or RBG and I actually cant reopen it again.
it wasnot Arena's only mate. it happened everywhere in LFR, Dungeon, BG, Arena. There are a lot of threads about this issue already.