fixedheader and tabs

protome

hello,
I have a strange problem I would like to know if somebody else has seen that. It is difficult to create an example, and I am not sure I will be able to reproduce it in jsfiddle.

I have a page with 2 tabs, the first tab uses datatables on a table that is created from an ajax call to a database - but the table is created in html and then I call datatables, with option fixedHeader: true, the table is simple and doesnot have many columns

the second page is called from the first page (link in rows) and displays a form with data extracted from db.

When the second page is longer than the browser view, and I scroll it (I use the browser scrollbar) I get the headers of my table in tab1 on top of my page

If i don't put the fixedheaders option, I don't get the headers.

has any body seen that before ? thanks

Pat