Can't change week from week of October 02 to week of October 09

Hi there,

I'm trying to place a new task into the week of October 09, and for some reason the '>>' button on the right of the screen won't move the calendar from the week of October 02 to the week of October 09. Instead, I have to use the calendar, skip two weeks in advance, and then using the '<<' button on the left of screen to move back to this week.