Pressing note G3 on synth turns picture of virtual instrument on/off

I have Cubase 13 Pro (Windows) , UR824 interface, and Yamaha MX88 synth. When adding an instrument track using Pianoteq 8 every thing seems to work fine, except: Pressing note G3 (G in third octave) on the synth synth, the picture of the Pianoteq 8 instrument appear/disappear on respectively (on/off) the screen even if the note is also played. Where can I adjust anything to solve this? Something in MIDI? Torleif Ruud, Oslo, Norway.2024-04-19T22:00:00Z

Hi and welcome to the forum,

Please, make sure, there is no Mackie Control, MIDI Remote or another Remote Device involved.