Hi @halloworld
I sometimes encounter this issue but when I do, it’s always my own bug or error; depending on the logic inside my loops, the placement of the stop call is important - either at the top, middle or at the bottom, as described in the documentation. But I haven’t encountered it as you describe, in 4.5, with individual loops just failing to stop entirely.
This thread discusses solo/mute for different loops:
hth
PD-Pi