Hero specific alt cast keybind bug

[hhernandezaznar]

I have alt cast bound to Press and Hold for most characters but for graves specifically I want it to be right click for easier access to alt grasping hands, however, when I go to hero specific binds and set it to Alt Cast Button, it changes for all the characters. If I change it back to Press and Hold in the default keybinds, the change affects graves too.
I've tried with some other characters like rem and dynamo and the same happens, so it seems like a hero specific keybinds bug.