When I set a row of columns to AutoFilter, the arrow boxes show up at the top of the columns (normal).
But when I select one of the arrows, and select one of the entries from the list that appears, all of the arrow boxes go away, so there is no way to close the filter and go back to the regular display.
This was not a problem in the last version of OO.
(But there were other problems with AutoFilter)
NOTE - these are pretty big spreadsheets - 800+ rows, 24+ columns.
Using open SUSE 11.0 x86_64
(Or is this a bug that needs to be reported on Bugzilla)