[NO BUG] MIDI Jumping

[Professor.suspect]

Hi! I have a Synth connected via MIDI. It has the 4/4 voices. 3/4 do work fine. When i add the 4th note, the 3th and 4th swap in ranking importance sometimes. So C D E F becomes C D F E. Otter example: When i have D3 D4 A4 D4 the second D4 wont send. I cant figure out what im doing wrong. I already thought about controlling them just over CV 1-4.

Thank You for your help!
The Prof.