<p>Usually when CrossValidated marks a question as &quot;active today&quot;, I can see something (edits or answers or bounties) that tells me what changed.</p>
<p><a href="https://stats.stackexchange.com/questions/208201/predictions-from-poisson-glmm-lme4-lower-compared-to-glm">This question</a> is marked as &quot;active today&quot;, but I don't see why.</p>
<p><a href="https://meta.stackoverflow.com/questions/371280/what-makes-a-question-active">This meta SO question</a> provides the list of 'bumping' actions appended below, but none of them seem to apply here.</p>
<ul>
<li><strong>Am I missing something obvious?</strong></li>
<li><strong>Are the rules for activity different on CV (and if so how)?</strong></li>
<li><strong>In any case, is there a way for me to see/figure out what changed?</strong></li>
</ul>
<p>(I know that's more than one question, but they're closely related ...)</p>
<hr />
<blockquote>
<p>The following activities will cause a question to be bumped:</p>
<ul>
<li>Addition of an answer</li>
<li>Editing the question or any of its answers (even if the answer is deleted) (with some exceptions; see Exceptions for edits bumping posts below)</li>
<li>A suggested edit gets approved [...]</li>
<li>Editing duplicates list of the question</li>
<li>Starting a new bounty (not awarding of an existing bounty, see below)</li>
<li>Successful reopening (if the question was closed previously)</li>
<li>The Community user will bump non-negatively scored, open questions every hour that have at least one answer scoring 0 and none scoring more than that.</li>
</ul>
</blockquote>
