In calendar view, when I have multiple milestones within a single day, the “diamond” doesn’t fill it when I complete all of the milestones. This makes it look like there are still some incomplete milestones.
Steps to reproduce:
Within your “My Tasks” Calendar view, create 2 milestones on a single day. Mark both milestones as completed. The diamond doesn’t fill in (like it does when only 1 milestone is present)
Browser version: Chrome Version 78.0.3904.108 (Official Build) (64-bit)