Calendar App error showing separate 'color code by' values for the same user on Assigned to field
We have a calendar in the Calendar app that is pulling from a roll-up task report for all of our projects. We have the color coding by Assigned to, but this is resulting in split values for some users - one showing their name and one showing their email. I've checked all of the tasks for these users and all are using the same contact entry which has their name correctly. This issue only appears in the calendar. All other places showing these fields show the user as the same for all of their tasks.
Has anyone else run into this issue, and if so were you able to resolve it?