I’m still learning the quirks of federation and the behaviors of communities hosted on different instances, so I apologize if this is something that’s been asked repeatedly.
I made a post to a community I am subscribed to at lemmy.ca, from my home instance at slrpnk.net. Public posts on that community (as well as the post that I made) are not showing up from my home instance. My profile page on my home instance does not show any record of the post that I made.
I was only able to find existence of the post that I made by going to lemmy.ca, and then finding the community that I posted to from there.
Interesting. Funnily enough, my comments are coming through to Lemmy as ‘Undermined’ too (just a PieFed bug, easily fixed), so the fact that you saw it (as well as the comments by the others I mentioned) means it’s not a language thing. That’s good, in a way, because it should be physically impossible to actually de-select it.
So, sorry - at least we can rule one thing out, but I don’t have any more suggestions.