Paper/patches/server/1031-Fix-team-sidebar-objectives-not-being-cleared.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 23 Sep 2023 22:31:54 -0700
Subject: [PATCH] Fix team sidebar objectives not being cleared

Objectives displayed in team sidebars were not cleared when switching
scoreboards. If a player's scoreboard has a displayed objective for the
'gold' sidebar, and their scoreboard was switched to one where they
still had a 'gold' team, it would still be displayed

diff --git a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java
index 628951be16da8f19f0e1a974a0b4efa86e873b99..7a2f46579352870cfbb32c343d7c68919758ffe3 100644
--- a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java
+++ b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java
@@ -87,8 +87,8 @@ public final class CraftScoreboardManager implements ScoreboardManager {
 
         // Old objective tracking
         HashSet<Objective> removed = new HashSet<>();
-        for (int i = 0; i < 3; ++i) {
-            Objective scoreboardobjective = oldboard.getDisplayObjective(net.minecraft.world.scores.DisplaySlot.BY_ID.apply(i));
+        for (net.minecraft.world.scores.DisplaySlot slot : net.minecraft.world.scores.DisplaySlot.values()) { // Paper - clear all display slots
+            Objective scoreboardobjective = oldboard.getDisplayObjective(slot); // Paper - clear all display slots
             if (scoreboardobjective != null && !removed.contains(scoreboardobjective)) {
                 entityplayer.connection.send(new ClientboundSetObjectivePacket(scoreboardobjective, 1));
                 removed.add(scoreboardobjective);