Whenever my players try to fight a pillager raid, the server crashes after a bit of fighting with ConcurrentModificationException. My server restarts immediately, so my players enter a loop of fighting for a bit, server crashing, then joining back until the raid is over. My server's a stock vanilla server.
Crash report attached.
Environment
Operating system: Arch Linux
Kernel version: 5.1.15
Java version:
openjdk 12.0.1 2019-04-16OpenJDK Runtime Environment (build 12.0.1+12)OpenJDK 64-Bit Server VM (build 12.0.1+12, mixed mode)
Pure vanilla server
Looks like a duplicate of MC-155345, which has been fixed in the upcoming release.