Since the update to the 9.0.x client, key bindings associated with the [½] key (located to the left of the [1] key on Danish keyboard layout), as well as the [´] key (2nd key to the right of 0, between [+] and [backspace]) no longer work.
They have always worked in all previous versions.
When opening the Key bindings menu, clicking an item there to try to set a key, they don’t even register as being pressed. Likewise, pressing the keys in game doesn’t trigger the action button the keybinds are already assigned to.
Tried clearing out my Interface and WTF folder, to make sure it wasn’t some rogue addon that was causing it.