diff --git a/README.md b/README.md
index 2a2ee515..0df883e6 100644
--- a/README.md
+++ b/README.md
@@ -112,9 +112,6 @@ or install the code-server extension via [Open VSX](https://open-vsx.org/extensi
 Please right-click the SQLite3 files (`*.db` or `*.sqlite3`) in the VS Code file explorer and select the "Open in Optuna Dashboard" command from the dropdown menu.
 This extension leverages the browser-only version of Optuna Dashboard, so the same limitations apply.
 
-Please note that we have confirmed the behavior of the code-server extension can be unstable.
-When opening SQLite files, the dashboard may not appear on the first attempt, but it should be displayed upon a second try.
-
 ## Submitting patches
 
 If you want to contribute, please check [Developers Guide](./CONTRIBUTING.md).
diff --git a/docs/getting-started.rst b/docs/getting-started.rst
index 3179d3f5..3375c469 100644
--- a/docs/getting-started.rst
+++ b/docs/getting-started.rst
@@ -228,9 +228,6 @@ or install the code-server extension via `Open VSX <https://open-vsx.org/extensi
 To use, right-click the SQLite3 files (``*.db`` or ``*.sqlite3``) in the file explorer and select the "Open in Optuna Dashboard" from the dropdown menu.
 This extension leverages the browser-only version of Optuna Dashboard, so the same limitations apply.
 
-Please note that we have confirmed the behavior of the code-server extension can be unstable.
-When opening SQLite files, the dashboard may not appear on the first attempt, but it should be displayed upon a second try.
-
 Google Colaboratory
 -------------------
 
diff --git a/vscode/CHANGELOG.md b/vscode/CHANGELOG.md
index 704abbc4..73d0021a 100644
--- a/vscode/CHANGELOG.md
+++ b/vscode/CHANGELOG.md
@@ -6,4 +6,18 @@ Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how
 
 ## [Unreleased]
 
-- Initial release
+* [bug] Fix a bug that the extension cannot show studies on the first attempt.
+* [feature] Enable a "Open in Optuna Dashboard" menu for `.log` files.
+
+## 0.2.0
+
+* [feature] Added support for `JournalFileStorage`.
+* [feature] Added support for code-server.
+
+## 0.1.0
+
+* [feature] Added older database schemas support (Optuna 2.6.0 or later)
+
+## 0.0.1
+
+* Initial Release
diff --git a/vscode/README.md b/vscode/README.md
index aa519fda..b9f457c5 100644
--- a/vscode/README.md
+++ b/vscode/README.md
@@ -12,21 +12,6 @@ Please right-click on the SQLite3 file (`*.db` or `*.sqlite3`) in the file explo
 
 Nothing to configure.
 
-## Release Notes
-
-### 0.2.0
-
-* Added support for `JournalFileStorage`.
-* Added support for code-server.
-
-### 0.1.0
-
-Added older database schemas support (Optuna 2.6.0 or later)
-
-### 0.0.1
-
-Initial Release
-
 ---
 
 **Enjoy!**
diff --git a/vscode/src/web/extension.ts b/vscode/src/web/extension.ts
index 096c2337..914f35ba 100644
--- a/vscode/src/web/extension.ts
+++ b/vscode/src/web/extension.ts
@@ -30,11 +30,16 @@ export function activate(context: vscode.ExtensionContext) {
       const appPath = panel.webview.asWebviewUri(indexJsUri)
 
       panel.webview.html = getWebviewContent(appPath)
-
-      const storageContentBase64 = await readFileAsBase64(fileUri)
-      panel.webview.postMessage({
-        type: "optunaStorage",
-        content: storageContentBase64,
+      panel.webview.onDidReceiveMessage(async (message: any) => {
+        switch (message.type) {
+          case "webviewDidLoad":
+            const storageContentBase64 = await readFileAsBase64(fileUri)
+            panel.webview.postMessage({
+              type: "optunaStorage",
+              content: storageContentBase64,
+            })
+            break
+        }
       })
     }
   )
@@ -64,6 +69,14 @@ function getWebviewContent(indexJsUri: vscode.Uri): string {
   <meta charset="utf-8" />
   <title>Optuna Dashboard (Wasm ver.)</title>
   <script type="module" crossorigin src="${indexJsUri}"></script>
+  <script>
+    (function() {
+      const vscodeApi = acquireVsCodeApi();
+      window.addEventListener('DOMContentLoaded', (event) => {
+        vscodeApi.postMessage({ type: 'webviewDidLoad' })
+      })
+    }())
+  </script>
 </head>
 <body>
   <div id="root"></div>