By 'footnote number' you refer to the call number, right? That is, above the table there is a paragraph of text, at the end of which there is a footnote number. To see whether that number is the problem, I reduced that number all the way down to a font size of '1' i.e. made it so small it is almost invisible. But it did not make any difference. The table still bleeds over onto the next page by two lines as it was before I changed the font size of the footnote. So I think the problem must be due to something else.