Natural explorer at max level now grants +50% movement speed outside of combat but the bonus should be neutralized in combat (+0%). Instead it makes you slower at -50% speed. This penalty also becomes occasionally suck on players in multiplayer if they weren't the one to end combat, requiring a relog to the server

Yes this keeps happing to me -50% speed everytime not going to use that mutaion anymore it is broken 

This happens in literally any combat in multiplayer, even vs harmless, 1-shotable enemies.  AND if you log into a game with any Quickness effects, then remove them?  Boom, you're permaslowed!  It's seriously amazing that this Quickness "upgrade" failed to be tested even to this instantly obvious extent...

If you log in slowed from removing those items previously, entering any combat *without* Quickness items on seems to reset you back to normal speed.