https://bugs.winehq.org/show_bug.cgi?id=40083
--- Comment #1 from Vexorian vexorian@gmail.com --- Testing in WINE 1.9.0 and using Heroes Of The Storm 64 bits client. Fixes the problem.
(There's a separate bug in 1.9 that requires you to disable shcore in winecfg for the game to execute.)