It may have changed in the last few months, but I specifically recall seeing hexbear user comments on lemmy.ml posts well over a month after the one-sided defederation while on my sh.itjust.works account. I checked from at least 3 separate instances, lemm.ee, .world, and .works, as it was more than a little confusing for me. That’s also how I learned about spotty comment federation.
It may have changed in the last few months, but I specifically recall seeing hexbear user comments on lemmy.ml posts well over a month after the one-sided defederation while on my sh.itjust.works account. I checked from at least 3 separate instances, lemm.ee, .world, and .works, as it was more than a little confusing for me. That’s also how I learned about spotty comment federation.