I wanted my parameter IDs for sysex controls to be easily identifiable, so I started to number them at 1000.
The one at 1000 had a strange behaviour. The one at 1001 simply didn’t work. Hours later I decided to try with different IDs and lo and behold, 50 & 51 worked like a charm.
Maybe I didn’t properly RTFM, but it would be good to have some form of input validation or some tooltips?
issue fixed and verified to work fine by @buyallthecontrollers. Fix will be included in the upcoming firmware release.