listFeed.getEntries() returns only the rows before the first empty row

[Filippo Boatto]

Problem:
ListFeed listFeed = spreadSheetService.getFeed(feedUrl, ListFeed.class);
for (ListEntry entry : listFeed.getEntries()) {
   ...
}

In the for cycle i have only  the rows before the first empty row. 
If after the first empty row there are other rows it aren't returned in the 
list.
Example:
row 1: ABCDE
row 2: FGHI
row 3: empty
row 4: LMNO
row 5: PQRST

the row 4 and 5 are not in the list.
Why??