Keybinding for rotating in the build menu is locked to 'E & Q' even when completely unbound.
I play most games with 'E, S, D & F' as my move keys. I removed unmapped these, so I could walk around while building. The scroll wheel works, but 'E & Q' will always rotate the building as well. I've tried binding different primary/secondary keys as well, but they remain active even when unmapped.
A minor annoyance, nothing game shattering, but still an annoyance.