PageRegion's cache tags not bubbling, resulting in stale results being served by (Dynamic) Page Cache
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3571116. -->
Reported by: [penyaskito](https://www.drupal.org/user/959536)
Related to !531
>>>
<h3 id="overview">Overview</h3>
<p>Publishing a region doesn't invalidate caches properly</p>
<p>STR:</p>
<p>1. Enable page regions in Canvas.<br>
2. Create canvas page 1<br>
3. Open page/1<br>
4. Edit a page region in canvas editor while editing page 1.<br>
5. Publish page region<br>
6. Refresh /page/1.</p>
<p>Expected:<br>
Changes published are immediately shown.<br>
Actual result:<br>
I have to drush cr to see the changes.</p>
<h3 id="proposed-resolution">Proposed resolution</h3>
<h3 id="ui-changes">User interface changes</h3>
> Related issue: [Issue #3571532](https://www.drupal.org/node/3571532)
issue