After the last update my cursor won’t move properly. It will only move inside an are of the screen, the upper left half, but not the whole screen. Is this a common issue? What can be done about it?
I have also the same problem, and I just can’t play HOTS with it.
It look like the game starts with a minor window wich that constrain the cursor, and then jump to the window game in full screen. So it could be an issue between the system and game screen resolution.
I’m playin in a MacBookPro 15 (2019), 2,6 GHz Intel Core i7, 6 GB 2400 MHz DDR4 RAM, interchangeble graphic driver Intel UHD Graphics 630/Radeon Pro 555X (4GB). My macOS is Catalina v.10.15.1
I have the same problem. At first I had an access to settings bottom so I tires to fix it, but it only got worst. Now I don’t even have an access to menu 
I have been having this same problem on 10.14.6. Command-Tabbing from Heroes to another app and back fixes it.