Python Interface SPINDLE_FORWARD - rpm ignored

I'm on a vanilla v2.8.4 heavily using the Python Interface for the Manualmatic Pendant and all works pretty much as expected, except.. every so often when calling this command:

the rpm specified is ignored and substituted with the one from gmoccpy. This occurs every 5-10 starts, with (it would seem) no particular pattern. I can change the specified rpm, leave it the same, start/stop the spindle frequently, infrequently or sporadically and the result is the same: the specified rpm is ignored.

Am I missing a 'reset' or some such command (I am setting the spindle override to 1 first) that will prevent this?

I've posted this in 'General' but please move to a more appropriate category if required.

Sounds like gmoccapy might be overriding your commands sometimes.
undoubtedly a race condition.
Hard to say for sure without digging in deep to gmoccapy code.

Thank you for your reply Chris - I was afraid you'd (also) say that.

I'm not sure why gmoccapy would issue a spindle control command without *any* interaction with the gmoccapy interface - it is a little concerning that it would/could do so.

This feels like it is worthy of a bug report?

Well I'm really guessing based on your comment that it uses Gmoccapy's spindle speed - I'm not sure how you confirmed that.

My 'logic' was based on the spindle starting at the same RPM as specified in gmoccapy's prefs file (via the Settings->Hardware->Starting RPM option) - the DEFAULT_SPINDLE_SPEED is not present in my ini file (as it s in the sims).

I will try to write a Python script to replicate the issue. In the mean time, I just shouted at it:
Not going to pretend I'm happy using the sleep() but it's better than the spindle spinning too fast for the edge finder!