fix: fix some bugs around dialog emulation

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_6to1_21_5/data/Button.java

@@ -74,7 +74,7 @@ public Button(final Dialog dialog, final CompoundTag tag) {
 
         for (final String event : CLICK_EVENTS) {
             if (Key.stripMinecraftNamespace(type).equals(event)) {
-                clickEvent = actionTag;
+                clickEvent = actionTag.copy();
                 clickEvent.put("action", clickEvent.remove("type"));
                 return;
             }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_6to1_21_5/data/Dialog.java

@@ -150,7 +150,7 @@ private void fillServerLinksDialog(final ServerLinks serverLinks, final Compound
     }
 
     private void fillDialogList(final RegistryAndTags registryAndTags, final ServerLinks serverLinks, final CompoundTag tag) {
-        // Hold them as either a list of inlined, a singleton inlined, a registry entry or a tag.
+        // Hold them as either a list of inlined / singleton inlined, a list of registry entries / singleton entry or a tag.
         ListTag<CompoundTag> dialogsTag = tag.getListTag("dialogs", CompoundTag.class);
         if (dialogsTag == null) {
             CompoundTag dialogTag = tag.getCompoundTag("dialogs");
@@ -159,16 +159,23 @@ private void fillDialogList(final RegistryAndTags registryAndTags, final ServerL
                 dialogsTag.add(dialogTag);
             }
 
+            ListTag<StringTag> registryDialogsTag = tag.getListTag("dialogs", StringTag.class);
             StringTag registryDialogTag = tag.getStringTag("dialogs");
             if (registryDialogTag != null) {
+                registryDialogsTag = new ListTag<>(StringTag.class);
+                registryDialogsTag.add(registryDialogTag);
+            }
+            if (registryDialogsTag != null) {
                 dialogsTag = new ListTag<>(CompoundTag.class);
-                final String key = registryDialogTag.getValue();
-                if (key.startsWith("#")) {
-                    for (final CompoundTag entry : registryAndTags.fromRegistryKey(key.substring(1))) {
-                        dialogsTag.add(entry);
+                for (final StringTag nameTag : registryDialogsTag) {
+                    final String key = nameTag.getValue();
+                    if (key.startsWith("#")) {
+                        for (final CompoundTag entry : registryAndTags.fromRegistryKey(key.substring(1))) {
+                            dialogsTag.add(entry);
+                        }
+                    } else {
+                        dialogsTag.add(registryAndTags.fromRegistry(key));
                     }
-                } else {
-                    dialogsTag.add(registryAndTags.fromRegistry(key));
                 }
             }
         }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_6to1_21_5/provider/ChestDialogViewProvider.java

@@ -85,11 +85,18 @@ public void openDialog(final UserConnection connection, final Dialog dialog) {
                 texts.add(textWidget.label());
                 dialog.widgets().remove(textWidget);
             } else if (!texts.isEmpty()) {
+                // Flush collected texts before adding the non-text widget
                 dialog.widgets().add(dialog.widgets().indexOf(widget), new MultiTextWidget(texts.toArray(Tag[]::new)));
                 texts.clear();
             }
         }
 
+        // Flush remaining texts if any
+        if (!texts.isEmpty()) {
+            dialog.widgets().add(new MultiTextWidget(texts.toArray(Tag[]::new)));
+            texts.clear();
+        }
+
         final ChestDialogStorage previousStorage = connection.get(ChestDialogStorage.class);
         final ChestDialogStorage storage = new ChestDialogStorage(this, dialog);
         if (previousStorage != null) {
@@ -210,8 +217,9 @@ public boolean clickDialog(final UserConnection connection, final int container,
             }
         }
 
-        // Resync inventory view if the actions above didn't close the dialog.
-        if (connection.has(ChestDialogStorage.class) && storage.phase() == ChestDialogStorage.Phase.DIALOG_VIEW) {
+        // Resync inventory view if the actions above didn't close the dialog nor opened another one.
+        final ChestDialogStorage currentStorage = connection.get(ChestDialogStorage.class);
+        if (currentStorage == storage && connection.has(ChestDialogStorage.class) && storage.phase() == ChestDialogStorage.Phase.DIALOG_VIEW) {
             updateDialog(connection, storage.dialog());
         }
         return true;
@@ -274,17 +282,19 @@ protected Item getItemWidget(final UserConnection connection, final ItemWidget i
     }
 
     protected Item getMultiTextWidget(final UserConnection connection, final MultiTextWidget multiTextWidget) {
-        final Tag name = handleTag(connection, multiTextWidget.labels()[0]);
-        final int length = multiTextWidget.labels().length;
-        if (length == 1) {
-            return createItem("minecraft:paper", name);
+        final List<Tag> lines = new ArrayList<>();
+        for (final Tag label : multiTextWidget.labels()) {
+            final Tag[] split = ChatUtil.split(fixStyle(label), "\n");
+            for (final Tag line : split) {
+                lines.add(handleTag(connection, line));
+            }
         }
 
-        final Tag[] lore = new Tag[length - 1];
-        for (int i = 1; i < length; i++) {
-            lore[i - 1] = handleTag(connection, fixStyle(multiTextWidget.labels()[i]));
+        final Tag[] lore = new Tag[lines.size() - 1];
+        for (int i = 1; i < lines.size(); i++) {
+            lore[i - 1] = lines.get(i);
         }
-        return createItem("minecraft:paper", name, lore);
+        return createItem("minecraft:paper", lines.get(0), lore);
     }
 
     protected Item getBooleanInput(final UserConnection connection, final BooleanInput booleanInput) {