Scroll down, then right-click on headings to test.

Heading A: heading with ID

Heading B: heading with ID and inline child elements

Inside a <header> tag

named <a> tag

named & href'd <a> tag

Try right-clicking on the image to see how the menuitem looks there.

10px from top
175px from top
200px from top
220px from top

Were you expecting there to be something down here?
(All these line breaks are just so you can tell if the page actually scrolled to where it was supposed to when testing Copy URL With Hash.)