Paper/paper-server/patches/sources/net/minecraft/server/commands/SpreadPlayersCommand.java.patch

--- a/net/minecraft/server/commands/SpreadPlayersCommand.java
+++ b/net/minecraft/server/commands/SpreadPlayersCommand.java
@@ -255,6 +_,7 @@
                 entity.getYRot(),
                 entity.getXRot(),
                 true
+                , org.bukkit.event.player.PlayerTeleportEvent.TeleportCause.COMMAND // CraftBukkit - handle teleport reason
             );
             double d1 = Double.MAX_VALUE;