GWT 2.1 cell table paging bug?

AbstractPager uses HasRows#getVisibleRange()#getLength() to obtain the
page size. This doesn't seem to be a good idea as you can see in the
Showcase exmpale (Cell Widgets/Cell Table [1]).

This table gets populated with 250 entries and shows 15 per page. Now
click on the "next page" button. You go (correctly) all the way to
showing "226 - 240". But the next click switches to "236 - 250". I
expect the table to go to "241 - 250" (and thus showing only 10 rows).
But it gets worse: If you now start to navigate back, the display
range is moved by this offset. So you reach "11 - 25" and then "1 -
15"?!

I don't think this behaviour is intentional. At least the "go to last
page" and "go to first page" buttons work properly (showing "1 - 15"
and "241 - 250").

Bug?

Sebastian

[1] http://gwt.google.com/samples/Showcase/Showcase.html#!CwCellTable

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