Testing the new 2.2 update, I’m sorry I don’t know if this was present before this update.
1.- When inputting quavers into a percussion instrument (snare, bass drum, etc.) milliseconds after inputting it Dorico will reposition all quavers on the upbeat as if it were swing. Playback Options are set to Straight and there are absolutely no tempo markings other than Andante, Lento, Rit, etc. After restarting the PC, reinstalling the update and creating new instruments I was finally able to get rid of this bug by putting a Straight tempo marking and hiding it. The score in question is a classical piece and it has never had a Swing marking ever.
2.- Dynamics have no effect on a percussion kit. Initially I was using a self-created Percussion map for VSL percussion when I noticed the error. I then proceeded to add the Default expression map (besides the correct Percussion Map) thinking it would assign velocity as dynamic, that didn’t work. I then moved to Halion and Kontakt, still nothing. Then I tried creating a single instrument instead of a kit and dynamics work fine. So basically Dorico does not play any of the dynamics when percussion instruments are combined in a kit. This even applies to kits that use the same instrument e.g. concert toms