In the middle of a game, after the new round started, my walking keys (forward and backward) were suddenly reversed.

When typing in chat or anything else, my keyboard was still giving w as w and s as s.
When going into the options, forward was still w and backward still s.

Yet, I still had to change my options (after default and many other tries) to put w as backward and s as forward in order to fix this.

Anyone else having this issue ?