If I filter the gradebook to All grading Periods during the first grading period the totals columns disappear. Is that expected behavior or a bug?

[BrianLester]

I haven't noticed this before, but when I filter to All Grading Periods in the gradebook the total columns are not displayed. We have semester grading periods and an Assignments without Due dates grading period. We mentioned "All Grading periods" because faculty will use that when entering several grades this year, but it's not necessary at this stage - except as a quick check for graded assignments without due dates.

So does the All grading periods filter in the gradebook only work after the first grading period has ended?