A room I follow got a ~500-line message (a copy-pasted file) and two one-line replies to that message. However, NeoChat display the replied-to message in full as a quote before those replies, making each of them take more than 500 lines as well and no way that I can see of reducing that. In addition, one of those replies is currently the latest message in the room and the button that jumps to it jumps to the start of the quote, not the actual start of the reply.
Yeah totally agree it's on my list at some point