Unable to remap the TAB key

I unbound the Editor Actions -> Tab within the intellij settings.

Since ive done that, i can't press tab while writing code to ident my code.

I'm trying to rebind the keybind:

When i click in the input box and then hit tab (to bind it), the IDE just uses the tab to change to the next menu item.

I couldn't edit the keymap manually since i'm using the jetbrain settings sync.

There's no keymaps directory and the idea.key doesn't contain keybinds.