Section Filter Not Showing in SpeedGrader

[geores]

I just read this similar post, but it's different enough that there's potentially a different solution.

For one of my teachers, when the Gradebook is set to filter for a section, the SpeedGrader loses its "Showing Sections" filter.  The first line of the dropdown is the first student's name instead of the filter option.  The only way to get the filter back is to remove the filter in the Gradebook, then refresh the SpeedGrader.  This is only happening for one of her courses - the other courses still work normally (knock wood!).  It's happening for all of the assignments we've tested in that course.

The SpeedGrader section filter appears just fine when I look at her course as an admin, but I get the problem when I masquerade as the teacher.  The Course Settings for this course and her other courses look identical to me.  Where should I be looking?

Thanks!

[JeffCampbell]

A few thoughts. If this is only happening on one of the teacher's classes, and all classes have the same settings, I'm tempted to lean to a possible tech issue and would suggest submitting a help ticket to Canvas Support (Help menu on far left of Canvas, then select the option to Report a Problem).

Second, you mentioned this is happening when you masquerade as a teacher. Any chance that something is up with the settings for the user roles in this course? This seems like a very minor possibility.

Third, run a test. Have the teacher removes all filters in the Gradebook. Then close out of Canvas. Reload and launch Speedgrader from the assignment page rather than the Gradebook. Does this still occur? Is the teacher ONLY launching the Speedgrader from the Gradebook? I'm wondering if the issue might be tied to the workflow being used.