Hello.
I have a post I made to a group on lemmy.world that doesn’t seem to be federating.
The group is !aphantasia@lemmy.world. The post can be found here https://lemmy.nz/post/322993 and the same one here https://lemmy.world/post/108808?scrollToComments=true
Yeah it’s not very clear what’s happening, and when people try to explain it I don’t think it lines up with what we see. These things will get easier over time as new features are added.