[BUG] Keybindings are case sensitive for F[1-9] keys?

[c0debreak]

The following key bindings does not work, unless I replace F2 to f2

Was it a bug?

  {
    "keys": [
      "F2"
    ],
    "command": "side_bar_rename"
  },

[kingkeith]

This confused me at first too, but all keys need to be in lowercase - even the Fn keys.