<p>Thanks for the info, <em>iandees</em>.</p>
<p>Did you investigate the headers under <em>Network</em> to see whether you had received the <code>Last-Modified</code> Response header? I'm sure that you noticed my notice of update under <em>Background</em> stating that TomH had re-enabled <code>Last-Modified</code> <em>after</em> my testing. After all, as I said in my response to Tom 20 minutes ago, your browser is going to have a hard time knowing what value for <code>Last-Modified</code> to include within <code>if-modified-since</code> unless the origin server had sent it. Which is the whole point of this series of reports.</p>
<p>Good to know that now it works. Hooray!</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/openstreetmap/openstreetmap-website/issues/2262?email_source=notifications&email_token=AAK2OLLAN4MHVVLXYIN6JLTP226WPA5CNFSM4HYR7TU2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODXZWWQI#issuecomment-502491969">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/AAK2OLIPDSD3TR65DBXMY3TP226WPANCNFSM4HYR7TUQ">mute the thread</a>.<img src="https://github.com/notifications/beacon/AAK2OLMLE3NCQCU45DDC7KTP226WPA5CNFSM4HYR7TU2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODXZWWQI.gif" height="1" width="1" alt="" /></p>
<script type="application/ld+json">[
{
"@context": "http://schema.org",
"@type": "EmailMessage",
"potentialAction": {
"@type": "ViewAction",
"target": "https://github.com/openstreetmap/openstreetmap-website/issues/2262?email_source=notifications\u0026email_token=AAK2OLLAN4MHVVLXYIN6JLTP226WPA5CNFSM4HYR7TU2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODXZWWQI#issuecomment-502491969",
"url": "https://github.com/openstreetmap/openstreetmap-website/issues/2262?email_source=notifications\u0026email_token=AAK2OLLAN4MHVVLXYIN6JLTP226WPA5CNFSM4HYR7TU2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODXZWWQI#issuecomment-502491969",
"name": "View Issue"
},
"description": "View this Issue on GitHub",
"publisher": {
"@type": "Organization",
"name": "GitHub",
"url": "https://github.com"
}
}
]</script>