nostr:npub12vkcxr0luzwp8e673v29eqjhrr7p9vqq8asav85swaepclllj09sylpugg This might be an interesting test case for you. Please check out these two URLs:
https://primal.net/e/note1pcl7nvl77za6ksl3evquzlvmau4czenw73m07n55tdszv4n24gvqka2jdt
These are the thread for the same original node.
On nostr:npub1yzvxlwp7wawed5vgefwfmugvumtp8c8t0etk3g8sky4n0ndvyxesnxrf8q
.... I see 24 replies.
... On nostr:npub12vkcxr0luzwp8e673v29eqjhrr7p9vqq8asav85swaepclllj09sylpugg I see only 3 replies!
Is this because these replies are living on relays that Primal doesn't know about?
Or is this something do to with Primal's caching behavior?
Would be interesting to investigate