synch and effect problem with TSP 2

Not even 100% sure if it's a bug, but it feels a little strange that this is happening. I SYNC deck A to deck B, then set a loop up in A. I then engage the beat slicer to the loop going in deck A. While that is happening, I set a loop on B, and pull it back (playing a 4x4 house track) so it sounds like a drum roll. When I am adjusting the size of the loop in B (where the tempo isn't changing), it's affecting the beatslicer effect, and changing it's "swing". I've tried to replicate it without synching, but it doesn't happen. Either way, I would think that deck A's effect shouldn't be affected by loop size in deck B. Any ideas?

Probably because Deck B is the master and loops of less than one beat mess with the clock. Could be solved by using the master clock.

I'm 99% sure I'm already using the master clock.

I mean setting the master clock as the master. You said that you're syncing deck A to deck B, implying that deck B is the master.