[kelnos]

I don't think IRC is a good analogy here because there's no "message resync" that happens when the netsplit is resolved. If there are two people on opposite sides of a split, and they both send messages to a channel while things are still split, they will not see the other's messages when the split is over.

In the Matrix case, if a homeserver disappears for a while, it will sync any missed messages when it comes back online.

[immibis]

Which is a design deficiency when those messages are 6 months old, and are spam, from people who got banned 5 months ago.

[lmm]

I think so, but I'm not sure that OP would agree, given that they apparently want to see the exact same scrollback on all their devices.