what happens if you make and write an inital pitch bend move and release before the note on? The bend should register the move and return to zero with no change after that until the next move. Those rises of bend in your grab look like there is something fishy going on. Is there any other midi devices connected in ‘all midi inputs’
It’s not exactly my mistake, I made those recoding continuously and result always like this.
However I just improved the basic setup which was there for years, it is switching the default type of pitchbend event to “step” instead of ramp. It now record so many cc node but the bend value won’t change like this anymore.