<p></p>
<p dir="auto">If I had to guess, my guess would be that your locale on the website is "en-GB". This would allow for the email in the screenshot, because:</p>
<ul dir="auto">
<li>In en.yml the <code class="notranslate">friendship_notification.subject</code> text was changed, but the i18n key remained the same</li>
<li>In en.yml the email content was changed, and the i18n key was also changed from <code class="notranslate">had_added_you</code> to <code class="notranslate">followed_you</code></li>
<li>Then the deployment happened, but en-GB.yml was not yet updated at this point</li>
<li>So en-GB.yml had the old <code class="notranslate">subject</code> text and still said "friend"</li>
<li>and en-GB.yml did not have the new <code class="notranslate">followed_you</code> key</li>
<li>Then the email was created, with en-GB as the locale. The subject in en-GB was therefore the old subject. The <code class="notranslate">followed_you</code> key was not yet available, and so that was looked up in <code class="notranslate">en.yml</code> to find the text, which is the new one.</li>
</ul>
<p dir="auto">This is just guesswork though, maybe something else happened, but it at least fits what you observed.</p>

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