Practical workflows once Compat is enabled and patches succeeded.
Install Compat, enable it, and retest login, stream, photos, stories, and article publishing. You know it worked when pages that fatals or flooded logs stop doing that and members can use the community again.
Keep Compat enabled. Publish one Joomla article for the community, then edit it twice. You know it worked when the stream still shows one row for that article and the row refreshes after edit instead of spawning duplicates.
Leave Enable story photo paste on Yes. Keep EasySocial emoticons enabled if you also want the searchable picker in comments and conversations. Test paste in the story composer and emoji search where your members actually post.
Publish once, then edit as needed. Expect one stream row that updates. Do not disable Compat mid-campaign and wonder why duplicates returned.
If StackIdeas ships full Joomla 6 support that covers your stack, disable Compat and test thoroughly before uninstall. Your site may no longer need patches or stream ownership.
After 1.2.3 or newer, remove stale overrides for smileys or story layouts that force the old grid. Clear cache and hard-refresh until the portal-style searchable picker appears where emoticons are enabled.