@fu From #GNU_social, I only see a few of your posts in the thread. As you may know, #Diaspora's protocol is different from #OStatus, so the D* posts do not cross over.
But there's more going on. Years ago, when I hosted a #Friendica instance, posts from ~F to OStatus appeared natively. Now they don't. For example, almost never will a mention or reply from ~F to GS appear in the recipient's replies stream. This doesn't only happen on GS, though.
On Pleroma instances, ~F posts (at least from #libranet.de) appear with delays of 2-12 hours or more, sometimes out of context, usually out of order. They also sometimes change the scope when they reply to a scope limited post.
I have a ~Friendica account on libranet.de, but I barely ever use it because _everything_ seems to be broken and it frustrates me every time I try to use it. I should probably close it and check to see whether the issues are local to libranet.de or something common to all Friendica instances.