This page demonstrates the problem:

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<h1>Hello</h1>

<ol>

<li>Load this page as a file: URL (the problem only manifests with file: URLs)

<li>Change the font size with e.g. <code>Control-+</code>

<li>Click a fragment link

<li>Reload

<li>Notice zoom level goes back to default, as if the fragment were part of the
site under which the font size setting is stored

</ol>

<a href="#thing">here is a fragment link</a>

<a name="thing"><h2>Subhead</h2></a>

<p>Some words</p>
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