Dashboard component changes after clicking done

Hi,

I just created a dashboard for our leadership team which has a number of stacked column components showing fundraising data - i.e. how much raised in a particular category, month by month. Everything looks fine, until I go in to edit the component. After I click save, it still looks fine, but when I click done, it reverts to showing a much smaller data set than is included in the reports! (it just shows a couple of the months instead of all of them so instead of there being 6 stacked columns there are only 1 or 2).

Is anyone else experiencing this glitch?