missing "None" button for hotbar filters.

[MF-]

Hi
There should be "none" button in the hotbar filter dialogue.
(the one that pops up when you middle-click an empty slot)

I'll open the "did you know that..." thing to find out how can I unset the filter... I know there is a way, but I don't see it.

[kovarex]

Unset is control-middle click, but yes, having "nothing" option there would be nice.