Panning only reduces the volume in one channel, but I want have certain tracks only through left or right

I’m trying to create a track where the music is all panned hard right, and a click track is panned hard left, but no matter what I try, a hard pan just reduces the volume slightly in one ear and doesn’t remove it entirely. Where am I going wrong? This is all VERY new to me so apologies for the potentially stupid question.

Some playback audio enhancements will prevent hard panning:
they add crossover to create a pseudo surround-sound effect.