I have no idea how to reverse loops in the program and I can't see any such option but it could be done in another program like Audacity and then imported.
In which case I am totally out of ideas, sorry!! As I wrote above it seems to work as desired for me. 😞
Have either or both of you raised a support ticket on this? (You can use the Contact link at the foot of every forum page.)
Just one other thought: I tested this by reversing a crash cymbal loop. What "kind" of loop are you both testing it with? I ask, because I wonder whether the problem is specific to certain types of loop.