Let’s say:
- I am on instance A.
- I browse on a community that is on instance B
- a user from instance C post something on that community B.
Now i want to share a link to this post. Which instance should i pick?
- A my home instance
- B the community
- C the post author
C is most correct canonical URL actually. See the HTML at the bottom of this screenshot
More info: https://github.com/LemmyNet/lemmy-ui/issues/1418