Rhythmic Cues only partially showing over slash region

As you can see in the picture, there is a slash region with cues from the staff below. It begins at the same time, but as you can see, only one (and a few later) of the notes from below actually appear in the cue. If I change the cue below to Up-Stem voice, then all of the notes appear.

Why does this occur and how do I fix it?

Hi @jzimn is always better to post a cut-out Dorico file for investigation. (But maybe someone will figure out a solution with only the picture.)