Don't send inventories to the client before initialization

Fixes #2677

core/src/main/java/org/geysermc/geyser/translator/protocol/bedrock/BedrockSetLocalPlayerAsInitializedTranslator.java

@@ -30,6 +30,7 @@ import org.geysermc.geyser.session.auth.AuthType;
 import org.geysermc.geyser.session.GeyserSession;
 import org.geysermc.geyser.translator.protocol.PacketTranslator;
 import org.geysermc.geyser.translator.protocol.Translator;
+import org.geysermc.geyser.util.InventoryUtils;
 import org.geysermc.geyser.util.LoginEncryptionUtils;
 
 @Translator(packet = SetLocalPlayerAsInitializedPacket.class)
@@ -47,8 +48,13 @@ public class BedrockSetLocalPlayerAsInitializedTranslator extends PacketTranslat
                     // else we were able to log the user in
                 }
                 if (session.isLoggedIn()) {
-                    // Sigh
+                    // Sigh - as of Bedrock 1.18
                     session.getEntityCache().updateBossBars();
+
+                    // Double sigh - https://github.com/GeyserMC/Geyser/issues/2677 - as of Bedrock 1.18
+                    if (session.getOpenInventory() != null && session.getOpenInventory().isPending()) {
+                        InventoryUtils.openInventory(session, session.getOpenInventory());
+                    }
                 }
             }
         }

core/src/main/java/org/geysermc/geyser/util/InventoryUtils.java

@@ -66,9 +66,10 @@ public class InventoryUtils {
 
     public static void openInventory(GeyserSession session, Inventory inventory) {
         session.setOpenInventory(inventory);
-        if (session.isClosingInventory()) {
-            //Wait for close confirmation from client before opening the new inventory.
-            //Handled in BedrockContainerCloseTranslator
+        if (session.isClosingInventory() || !session.getUpstream().isInitialized()) {
+            // Wait for close confirmation from client before opening the new inventory.
+            // Handled in BedrockContainerCloseTranslator
+            // or - client hasn't yet loaded in; wait until inventory is shown
             inventory.setPending(true);
             return;
         }