We confirm that we were able to see the problem. Unfortunately we can see the problem only once in around 10 times that we we try to setup the loop. The other 9 times the loop just works. That is why it looks like this bug seems to have slipped through our testing process.
Maybe there is a specific scenario that is triggering this problem. We will try to find and fix it as soon as possible.
Do you have the problem every time you setup the loop? What are the exact steps you follow to setup the loop?
Specifically if you could answer the following:
1. Do you start the loop setup in idle or when already playing back.
2. Do you select the loop-in point by moving the cursor or by clicking the loop button when the playback is ongoing?
3. Do you select the loop-out point by moving the cursor or by clicking the loop button when the playback is ongoing?
4. What is the duration of the song and what is the loop-in time and loop-out time within the song?