Sublab Pitch change


I’ve bought Sublab a while ago and very much enjoying it until recently it suddenly started to change pitch by itself.
I’ve programmed a midi part in Ableton and it works fine for a while but then suddenly it change the pitch, the midi notes are not altered it’s just the sound coming from the synth that changes by 1 or 2 semitones.

Not sure if this has been raises already?

Any suggestion to correct this issue?

Thank you