Use deep copy for layout components when applying message data

src/main/java/net/dv8tion/jda/api/interactions/components/ActionRow.java

@@ -269,6 +269,13 @@ public ActionRow asEnabled()
         return withDisabled(false);
     }
 
+    @Nonnull
+    @Override
+    public LayoutComponent createCopy()
+    {
+        return ActionRow.of(components);
+    }
+
     @Nonnull
     @Override
     public Component.Type getType()

src/main/java/net/dv8tion/jda/api/interactions/components/LayoutComponent.java

@@ -190,6 +190,15 @@ default boolean isValid()
         return true;
     }
 
+    /**
+     * Creates a copy of this {@link LayoutComponent}.
+     * <br>This does not create copies of the contained components.
+     *
+     * @return A copy of this {@link LayoutComponent}
+     */
+    @Nonnull
+    LayoutComponent createCopy();
+
     /**
      * Find and replace a component in this layout.
      * <br>This will locate and replace the existing component with the specified ID. If you provide null it will be removed instead.

src/main/java/net/dv8tion/jda/api/utils/FileUpload.java

@@ -301,6 +301,16 @@ public String getName()
         return name;
     }
 
+    /**
+     * The description for the file.
+     *
+     * @return The description
+     */
+    public String getDescription()
+    {
+        return description;
+    }
+
     /**
      * The {@link InputStream} representing the data to upload as a file.
      *

src/main/java/net/dv8tion/jda/api/utils/messages/MessageCreateRequest.java

@@ -313,6 +313,8 @@ default R addFiles(@Nonnull FileUpload... files)
     /**
      * Applies the provided {@link MessageCreateData} to this request.
      *
+     * <p>Note that <b>files will not be copied</b>.
+     *
      * @param  data
      *         The message create data to apply
      *
@@ -325,15 +327,18 @@ default R addFiles(@Nonnull FileUpload... files)
     default R applyData(@Nonnull MessageCreateData data)
     {
         Checks.notNull(data, "MessageCreateData");
+
+        final List<LayoutComponent> layoutComponents = data.getComponents().stream()
+                .map(LayoutComponent::createCopy)
+                .collect(Collectors.toList());
         return setContent(data.getContent())
                 .setAllowedMentions(data.getAllowedMentions())
                 .mentionUsers(data.getMentionedUsers())
                 .mentionRoles(data.getMentionedRoles())
                 .mentionRepliedUser(data.isMentionRepliedUser())
                 .setEmbeds(data.getEmbeds())
                 .setTTS(data.isTTS())
-                .setComponents(data.getComponents())
-                .setFiles(data.getFiles());
+                .setComponents(layoutComponents);
     }
 
     @Nonnull