Fixes

core/src/main/java/dev/nandi0813/practice/manager/fight/ffa/FFAListener.java

@@ -398,7 +398,7 @@ public void onPlayerDeath(PlayerDeathEvent e) {
         DeathCause cause = FightUtil.convert(damageSource.getDamageType());
         ffa.killPlayer(player, killer, cause.getMessage().replace("%killer%", killer != null ? killer.getName() : "Unknown"));
 
-        if (killer != null) {
+        if (killer != null && !killer.equals(player)) {
             Statistic statistic = ffa.getStatistics().computeIfAbsent(
                     killer,
                     p -> new Statistic(ProfileManager.getInstance().getUuids().get(p))

core/src/main/java/dev/nandi0813/practice/manager/fight/ffa/game/FFA.java

@@ -224,7 +224,7 @@ public void killPlayer(Player player, Player killer, String deathMessage) {
         // check whether a recent attacker should be credited instead.
         if (killer == null) {
             Player lastAttacker = getLastAttacker(player);
-            if (lastAttacker != null && deathMessage != null
+            if (lastAttacker != null && !lastAttacker.equals(player) && deathMessage != null
                     && deathMessage.equals(dev.nandi0813.practice.manager.fight.util.DeathCause.VOID.getMessage())) {
                 killer = lastAttacker;
                 deathMessage = dev.nandi0813.practice.manager.fight.util.DeathCause.VOID_BY_PLAYER
@@ -237,7 +237,7 @@ public void killPlayer(Player player, Player killer, String deathMessage) {
         Profile deadProfile = fightPlayers.get(player).getProfile();
         deadProfile.getStats().getLadderStat(players.get(player)).increaseDeaths();
 
-        if (killer != null) {
+        if (killer != null && !killer.equals(player)) {
             Profile killerProfile = fightPlayers.get(killer).getProfile();
             killerProfile.getStats().getLadderStat(players.get(killer)).increaseKills();
 

core/src/main/java/dev/nandi0813/practice/manager/fight/match/Match.java

@@ -343,7 +343,13 @@ public void endMatch() {
             removeSpectator(spectator);
 
         // Reset the arena and only make it reusable after rollback completes.
-        resetMap(() -> this.arena.setAvailable(true));
+        // Also defer live-match removal to the rollback callback so block event listeners
+        // can still resolve this match via cuboid lookup during the multi-tick rollback,
+        // preventing untracked block changes from leaking into the next match.
+        resetMap(() -> {
+            MatchManager.getInstance().getLiveMatches().remove(this);
+            this.arena.setAvailable(true);
+        });
 
         this.cancel();
 
@@ -422,7 +428,7 @@ public void addSpectator(Player player, Player target, boolean teleport, boolean
             return;
         }
 
-        if (this.status.equals(MatchStatus.OVER)) {
+        if (this.status.equals(MatchStatus.OVER) || this.players.isEmpty()) {
             Common.sendMMMessage(player, LanguageManager.getString("SPECTATE.MATCH.MATCH-ENDED"));
             return;
         }
@@ -463,6 +469,7 @@ public void addSpectator(Player player, Player target, boolean teleport, boolean
         }
 
         Profile profile = ProfileManager.getInstance().getProfile(player);
+        profile.setStatus(ProfileStatus.SPECTATE);
 
         if (profile.isStaffMode()) {
             InventoryManager.getInstance().setStaffModeInventory(player);

core/src/main/java/dev/nandi0813/practice/manager/fight/match/listener/MatchLifecycleListener.java

@@ -58,7 +58,10 @@ public void onMatchEnd(MatchEndEvent e) {
         if (party != null)
             party.setMatch(null);
 
-        MatchManager.getInstance().getLiveMatches().remove(match);
+        // Live match removal is deferred to after rollback completes in Match.endMatch().
+        // This ensures block event listeners can still resolve the match via cuboid lookup
+        // during the multi-tick rollback window, preventing untracked block changes.
+        // MatchManager.getInstance().getLiveMatches().remove(match);
 
         // Update GUIs
         if (match instanceof Duel && ((Duel) match).isRanked())