What steps will reproduce the problem?
(1) goto www.html-kit.com/tools/cookietester
(2) while the page is loading, over-scroll to try to reload.

What is the expected result?
The page should not reload.

What happens instead?
it reloads.

While the reload button is disabled when there is a page loading, the behavior of dragging screen downwards should be consistent with reload button.

BTW, this only happens on iOS, cannot reproduce on Android.