Right clicking in deus ex also jumps

[Shlokda]

I was playing some deus ex and oldschool unreal tournament GOTY on my mac. I'm running them in os x through classic. I'm having an issue in which whenever I right click to do an alternate fire or function; but my character also jumps at the same time. I checked the keyboard settings and I dont have the jump key binded to my right click button... Ive tried resetting and re-binding the key maps and It still just jumps + alternate fire whenever I right click. I havent found anyone else online that's posted a similar thread. Anyone got any ideaS? This occurs in multiple games.