chore: prepare CHANGELOG.md for v3.18.0

Author: sendbird-sdk-deployment

CHANGELOG.md

@@ -1,5 +1,20 @@
 # Changelog - v3
 
+## [v3.18.0] (MAY 27 2026)
+### Features
+- Redesigned the message composer's file attachment flow
+
+  Files can now be attached by drag-and-drop or clipboard paste, and are staged inside the composer so they can be reviewed before sending. The file picker, drag-and-drop, and paste all enforce the same type, size, and count constraints. Available in `GroupChannel` and `Thread`, with single-file support in `OpenChannel`.
+
+### Fixes
+- Fixed a bug where clicking a search result did not scroll to or highlight the target message
+- Fixed a bug where message scroll pagination did not recover after a network disconnection or a search query change
+- Fixed a bug where the `Thread` view was reset when another user was banned from or left the channel
+- Fixed a bug where the typing indicator was not cleared correctly when the input became empty or the channel changed
+- Fixed a bug where the voice message player did not reset its playback position when the channel changed
+- Fixed a bug where HTML in the message input was not sanitized when editing a message
+- Fixed an inaccurate warning message shown when the mention count limit is exceeded
+
 ## [v3.17.12] (MAR 26 2026)
 ### Fixes
 - Fixed a bug where invisible zero-width spaces inserted during paste in `MessageInput` could be included in sent or updated messages
@@ -50,7 +65,6 @@
 ### Fixes
 - Fix a bug where `autoscrollMessageOverflowToTop` set on `SendbirdProvider` was not being passed down to child components
 
-
 ## [v3.17.5] (DEC 03 2025)
 ### Features
 - Added `autoscrollMessageOverflowToTop` global option
@@ -67,14 +81,12 @@
 ### Fixes
 - Fixed a bug where scrollToMessage
 
-
 ## [v3.17.4] (NOV 26 2025)
 ### Fixes
 - Fixed a Bug where SDK initialization could fail or remain uninitialized in React 17
 - Fixed a bug where `mentionedMessageTemplate` is being set even when the message is not a mentioned message
 - Fixed a bug where URL links inside Markdown-type messages do not open in a new tab
 
-
 ## [v3.17.3] (OCT 2 2025)
 ### Fixes
 - Fixed a bug where failed message can't be resend
@@ -242,7 +254,6 @@
 ### Fixes:
 - Fixed the width of the messages in open channel
 
-
 ## [v3.15.12] (Jan 9 2025)
 
 ### Features:
@@ -392,7 +403,6 @@
 ### Fixes
 - Fixed an issue where the channel UI's scroll did not work after sending a new message. This issue was specific to the NextJS environment.
 
-
 ## [v3.15.1] (Aug 29, 2024)
 
 ### Fixes
@@ -543,7 +553,6 @@
   - Exported the `ChannelSettingsMenuItem` component.
 - Added `interop: "compat"` setting for the CommonJS output in Rollup Config to enhance the compatibility between ESM and CJS.
 
-
 ## [v3.14.12] (July 3, 2024)
 
 ### Features
@@ -658,7 +667,6 @@
 - Updated `@sendbird/chat` version to 4.13.0
   - Improved channel/message refreshing performance utilizing LocalCaching.
 
-
 ## [v3.14.11] (June 20, 2024)
 ### Features
 - Markdown Support for Text Messages
@@ -802,7 +810,6 @@
 ### Features
 - Added a modal to the `FileViewer` components for utilizing the `onMounted` event handler.
 
-
 ## [v3.14.8] (May 30, 2024)
 ### Fixes
 - Resolved the issue of storybook user leaving the channel
@@ -819,7 +826,6 @@
 ### Features
 - Added support for rendering `.mov` file type only in Safari browser
 
-
 ## [v3.14.7] (May 23, 2024)
 ### Fixes
 * Fixed issue where files that failed to compress were not being sent
@@ -867,7 +873,6 @@
 ### Fixes
 * Fixed a bug where suggested replies are incorrectly displayed when `showSuggestedRepliesFor` is set to 'last_message_only'
 
-
 ## [v3.14.3] (Apr 19, 2024)
 ### Features
 * Add outputFormat to the image compression options
@@ -1125,7 +1130,6 @@ A message with valid `extendedMessagePayload.template` value will be displayed w
 
 - Added detailed comments for customizing-related props in the `GroupChannel` module
 
-
 ## [v3.12.0] (Feb 16, 2024)
 
 ### Features:
@@ -1456,7 +1460,6 @@ Feedback message feature can be turned on through `enableFeedback` option. When
 ### Improvement:
 * Channels list no longer displays unread message count badge for focused channel
 
-
 ## [v3.8.2] (Nov 10 2023)
 
 ### Features:
@@ -1990,7 +1993,6 @@ import { ThreadProvider } from '@sendbird/uikit-react/Thread/context';
   This resolves the issue where spreading the message object in the reducer loses some methods like `isUserMessage` and `isFileMessage`
 * fix util functions logic of verifying message type. We updated logic in util functions to verify the message type. (#700)
 
-
 ### Chore:
 * Update Trunk-Based Development to Scaled Trunk-Based Development (#696)
   It describes the flow with short-lived feature branches, code review, and build automation before integrating into main.
@@ -2023,7 +2025,6 @@ const memoizedSdkInitParams = useRef({
 * Verify the fetched message list size with the requested size of the MessageListParams. Added a test case for verifying the fetched message list size. (#686)
 * Address the incorrect cjs path in package.json. The common js module path in the pacakge.json has been fixed. (#685)
 
-
 ## [v3.6.3] (July 6 2023)
 ### Feat:
 * Add new scrollBehavior prop to Channel (#676)
@@ -2472,7 +2473,6 @@ Fixes:
     * Usually user profile in channel moderation
   * Context menu of last item in channel gets clipped in the bottom
 
-
 ## [v3.4.2] (Mar 17 2023)
 
 Features: