SOLVED!!
My LFOs were the Reason, Thanks to Elektronauts on Facebook. 
. . . . .
Video of one variation of the Problem : https://youtu.be/i5FoBzYye8w?si=aiLB1sD_lbHPoBvm
Video of another variation of the Problem :
Video when Working properly :
https:// youtu.be/_wP0RrEmrDo? feature=shared
(Remove the spaces to Click)
NEED OCTAHELP! (OT MKI)
(I can’t find much on the internet/reddit/elektronauts, etc…)
I have 2 buggy places in my new project where I use chromatic mode (and lots of others that have no problem).
Sometimes it works and you can hear the different notes, sometimes it bugs and plays everything on the same note(This makes a pretty sad melody. ) To add to the confusion, sometimes it plays the notes but an octave higher than what I’ve programmed but with a few note variation missing.
When I set the chromatic mode, sometimes I only have access to the higher half of the octave, and sometimes to the whole keyboard (**I’m talking about the same sample, the same track and Pattern… so depending on the machine’s mood…! HELP! )
My tracks are in flex… sometimes I close and open the machine and my pattern sounds perfect / or doesn’t play properly. Sometimes I’m working on my project and it works fine at first and then suddenly it doesn’t. I’ve been testing and reading for days and weeks now. I tried a lot of things (copy-pasting the pattern somewhere else, etc) and haven’t found any consistency in the Problem. It all sounds pretty esoteric to me!
My midi was on int/ext and I put just int but I don’t see any change.
Does anyone have any clues for me?
**Note that my banks were in the wrong order for my set, so I did a lot of copy-pasting to get them in the right order.
Is it possible that the bug was created at this point? It seems to me that everything was fine before (I composed new chromatic patterns afterwards - which are victims of the problem). The probleme is mostly on Track4 but I dont know if this info is of any help.
Thanks for your help - it’s my music project that I’m presenting this summer! 
I’ve never experienced this with my old projects.
(I updated the OS but it didnt help)