I’m not exactly sure why Dorico is doing this, but it is very obviously not correct, or at least very confusing:
At the very least, if I were writing on paper, I would not have notated the above example in that way. In this case it would make a great deal more sense to me to have the position of the quarter and sixteenth in the first tie chain swapped, so that the beats are always clear. At the moment, the quarter extends from the second sixteenth subdivision of the second beat of the measure to the second sixteenth subdivision of the third beat of the measure. If the sixteenth and quarter were swapped in the tie chain, the quarter would instead be from beat to beat, which (to me) makes this much easier to read. Is there a way to get this result without forcing duration?