automaticly unbinding hotkey

I'd like to report a bug.

Only recently one of the skill hotkeys seem to mallfunction. The w-key hotkey automaticly unbinds when I level up any skill gem. It seem to happen to every skill I bind on it and it has only happened to me since my char is lvl 55.

I'm not sure what causes it and there seem to be more reasons than just leveling up a skill gem that causes the W-key to be unbind.

Please let me know if you need more information about the bug.

Thanks for your time,

Hellskin

There's been a few topics on this, we believe it's by putting Freeze Mine in (I think it's the Detonate part) that keeps resetting that slot after using it once.

Take a look here:
http://www.pathofexile.com/forum/view-thread/31208