Bleed after bounce

I'm creating tracks for my band. Click left, track right. As I listen to the playback, the tracks are completely separated. Whether I'm panning hard to one side, or routing through Output 1 for click, Output 2 for track, they are completely separated. However, after bouncing, there is a slight bleed on either side. I have tried bouncing Interleaved, and mono summed, both times using a hard pan, both times using the routing Output 1, Output 2 method. Either way I do it, it results the same. Bleed from one side to the next. This is not a recording issue where a mic is picking up the click through the headphones. I can create a click track, with no other recorded tracks, bounce the click only, and the same result happens. For all you guys that do backing tracks for your band, how do you go about preparing your tracks for separation, and then how do you bounce to get clean separate signals with no bleed.

Thank you.