tested commenting across instances on one of the conf.tube videos to figure out what the current state of affairs are
image 1: my single user #mastodon instance
image 2: mastodon.social after cache has been cleared by @Gargron
image 3: https://conf.tube #peertube instance
https://conf.tube/videos/watch/bf1309c1-0f5e-4fa1-9b58-fc240f369684;threadId=646
@liaizon on your single user instance are you following the account and if so was it before the video was even posted? Because it looks like your instance just hasn't fetched any apconf content because it didn't know about it. Whereas for social almost certainly already had a subscriber and so knew about the content and so could render it