Joakim,
There have been many, many threads about this strange behaviour, especially since the MakeMusic offer has brought former Finale users to Dorico.
It seems that the Notations Options aren’t working as they should and that this is due to a bug, a bug that we’re currently having to get round by doing some impossible pirouettes. So let’s wait and see whether the development team fixes it soon or not.
See this thread
and, especially the answer of Daniel Spreadbury, six days ago :