I nearly raised this before, but I could not reproduce it, until I tried again today.
It is an intermittent fault, build 3.0.2.98, standalone, Mac.
With multiple voices active and the mod wheel controlling the LFO mod, only some voices get modulated. Others remain unmodulated.
e.g. Template preset '1 Osc Square'.
Set number of voices to 16, 32.
Set mode to Poly
use wheel full up to introduce LFO vibrato. Hit a few chords.
Do you get any odd behaviour?
Thanks Jeff