Canvas Mobile Teacher - Attendance Loads Slow - can't switch rosters

[GeoffreyWheeler]

I like to use Canvas Mobile Teacher to take attendance.  I can walk around the classroom and make sure I get everyone.  During the day I need to change from one class (section) roster to another using the funnel (filter) icon.   If I use one roster and switch to another within a few seconds (using the funnel icon), it will switch and load the roster.  If there is a delay of a few minutes, the funnel icon does not respond. I have to exit Attendance and reload it (this is a little time consuming). It would be nice if this bug was fixed. I have found a work-around that is a little quicker than exiting Attendance.  I tap on the Calendar icon and then tap on "OK". The page will reload within a few seconds and the funnel icon will again respond and I can select another class section roster.