We are running an experiment, and in charts seeing a higher number of exposures than assignments. When we drill into users who have an exposure and not an assignment, they do end up having an “Assignment” event in their user event stream. What is preventing them from being included in the roll-up assignment calculation?

^Higher number of exposures than assignments for the treatment variant

^drilling into a user who was counted as “Exposed” but not “Assigned” and they do have an Assignment event with the right variant for this experiment. 

We are using default exposure settings and remote config. We are targeting on a cohort if that makes a difference.