Good point, it doesn't look like a ProTracker module. I mostly tried PT1 mode because the module uses Invert Loop, which requires PT1 mode in XMPlay. So in the end it looks more like XMPlay needs another way to enable EFx commands without enforcing PT1 limits... OpenMPT just supports them unconditionally, no matter which type of MOD file, and I'm not aware of any issues so far. Maybe XMPlay could enable EFx support by default as well?