When filtering user by access date the date fields should specify which field 'is before' and which field 'is after'.

Since 2.5 the filter form for user by access date is not usable. There are two date fields for each of ther filter selectors First access/Last access and Last modified but no text entry which field defines which filtering.

Solution:
add 'is after' in front of first date field and 'is before' in front of second date field for each of the selectors.