Just stuck on the dock and not opening at all, being force to force quit and restart my mac, nothing seems to work it was working yesterday but because of the patch updates 29/11/18, it really stuff up my hots game, every other blizz game is running normally just issues with heroes itself for mac’s.
my first guess is OS, which OS are you currently using? is likely that HOTS stopped supporting previous OS and you need to update to a newer one, I‘m currently running on Yosemite and it works perfectly by now