If it could be avoidable, it'd be useful for the page to not refresh after editing someone's checkin. I periodically go through the people that sign in for my OH checking in case they accidentally sign in for more than an hour (like Lab instead of 1x Office Hours), and the page refreshes each time.
It happens when you're on the checkins tab on the TA console:
https://la.cs61a.org/ta/console/checkins