This page contains only two items -- a section heading and a floating table.
In the absence of a specified option, a float will preferentially be placed at the top of the page, in this case above the section heading.
An easy way to get around this problem is to specify an option. Here, the option [hb] will omit trying to place the float at the top of the page. If it doesn't fit "here", it will be deferred to the bottom of the next page. (If the figure is very large, it would be a good idea to add "page" to the options: [hbp].
A good general explanation of how floats are positioned is given here: How to influence the position of float environments like figure and table in LaTeX?
\clearpageinstead\newpage? – Mensch Sep 13 '19 at 19:30tableis a floating object. Try making the optional placement[hb]to omit the possibility of it being placed at the top of the page. – barbara beeton Sep 13 '19 at 21:44