mojira.dev

bergerkiller

Assigned

No issues.

Reported

No issues.

Comments

I’m a Bukkit plugin developer, targeting vanilla minecraft clients. It’s probable this bug is affecting me too. Since 26.3 (26.2 was fine), display entities specifically randomly jitter and move around when the client suffers a slight lag spike compared to other entities. Since my plugin depends on entities moving together at the same rate using bundle packets, this currently breaks important behavior like players riding inside vehicles.

The workaround I’ve found is to put display entities inside a non-display entity mount.

Below is a video where I introduce some additional lag by running stress -c 15 in the background to give the client a lag spike. Again, not happening on 26.2, and also not happening if I put those 3 blocks into an invisible armorstand mount and move the mount instead.

[media: 2026-10-20 20-02-50.mp4]