Look at this example:
Bar 1 and 2: Dorico does not add extra space for the flag in bar two before the barline
Bar 3: Dorico adds space for the tie at the end of the bar
Bar 4: Dorico adds space for the tie and the flag at the end of the bar. For me this looks to much.
In general it would be great, if Dorico would be able to adjust the ties for the upper voice automatically.
Bar 1 and 2: Dorico is not adding extra space for the flag.
Bar 3: Dorico is adding space for the tie
Bar 4: Dorcio is adding space for the tie and the flag, even if the note with the flag is moved to the left. This looks wrong to me.