diff --git a/CHANGES.md b/CHANGES.md
index 387a065d..b3000ad4 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -11,6 +11,9 @@
 
 ## develop
 
+- [FIX]  `request media` `connect` を実行した後に、`Enable mic device` `Enable camera device` のトグルでデバイスを無効化した時に Media Processor が保持している Track の停止漏れを修正する
+  - トグル切替でマイクやカメラのデバイスを無効化してもカメラ等のデバイスが使用中の状態のままになってしまっていた
+  - @tnamao
 - [ADD] Sora とは接続せず Audio / Video デバイスの表示確認と停止を行う `request media` `dispose media` 機能を追加する
   - 現状の設定項目を利用するため、`request media` の実行中は `role` や `mediaType` を disabled にする
   - @tnamao
diff --git a/src/app/actions.ts b/src/app/actions.ts
index bcee4c92..90006e0a 100644
--- a/src/app/actions.ts
+++ b/src/app/actions.ts
@@ -853,7 +853,7 @@ function setSoraCallbacks(
       dispatch(slice.actions.removeRemoteMediaStream((event.target as MediaStream).id));
     }
   });
-  sora.on('disconnect', (event) => {
+  sora.on('disconnect', async (event) => {
     const message: Record<string, unknown> = {
       type: event.type,
       title: event.title,
@@ -872,65 +872,11 @@ function setSoraCallbacks(
         createSoraDevtoolsTimelineMessage('event-on-disconnect', message),
       ),
     );
-    const {
-      fakeContents,
-      soraContents,
-      reconnect,
-      lightAdjustmentProcessor,
-      noiseSuppressionProcessor,
-      virtualBackgroundProcessor,
-    } = getState();
-    const { localMediaStream, remoteMediaStreams } = soraContents;
-    let originalTrack;
-    if (lightAdjustmentProcessor && lightAdjustmentProcessor.isProcessing()) {
-      originalTrack = lightAdjustmentProcessor.getOriginalTrack();
-      lightAdjustmentProcessor.stopProcessing();
-    }
-    if (virtualBackgroundProcessor && virtualBackgroundProcessor.isProcessing()) {
-      if (originalTrack === undefined) {
-        originalTrack = virtualBackgroundProcessor.getOriginalTrack();
-      }
-      virtualBackgroundProcessor.stopProcessing();
-    }
-    if (originalTrack !== undefined) {
-      originalTrack.stop();
-      dispatch(
-        slice.actions.setTimelineMessage(
-          createSoraDevtoolsMediaStreamTrackLog('stop', originalTrack),
-        ),
-      );
-    } else {
-      if (localMediaStream) {
-        localMediaStream.getVideoTracks().forEach((track) => {
-          track.stop();
-          dispatch(
-            slice.actions.setTimelineMessage(createSoraDevtoolsMediaStreamTrackLog('stop', track)),
-          );
-        });
-      }
-    }
-
-    if (noiseSuppressionProcessor && noiseSuppressionProcessor.isProcessing()) {
-      const originalTrack = noiseSuppressionProcessor.getOriginalTrack();
-      if (originalTrack) {
-        originalTrack.stop();
-        dispatch(
-          slice.actions.setTimelineMessage(
-            createSoraDevtoolsMediaStreamTrackLog('stop', originalTrack),
-          ),
-        );
-      }
-      noiseSuppressionProcessor.stopProcessing();
-    } else {
-      if (localMediaStream) {
-        localMediaStream.getAudioTracks().forEach((track) => {
-          track.stop();
-          dispatch(
-            slice.actions.setTimelineMessage(createSoraDevtoolsMediaStreamTrackLog('stop', track)),
-          );
-        });
-      }
-    }
+    // ローカルの MediaStream の Track と MediaProcessor を止める
+    await stopLocalVideoTrack(dispatch, getState());
+    stopLocalAudioTrack(dispatch, getState());
+    const { fakeContents, soraContents, reconnect } = getState();
+    const { remoteMediaStreams } = soraContents;
     remoteMediaStreams.forEach((mediaStream) => {
       mediaStream.getTracks().forEach((track) => {
         track.stop();
@@ -1174,6 +1120,7 @@ export const disposeMedia = () => {
     }
     if (originalTrack !== undefined) {
       originalTrack.stop();
+      localMediaStream?.removeTrack(originalTrack);
       dispatch(
         slice.actions.setTimelineMessage(
           createSoraDevtoolsMediaStreamTrackLog('stop', originalTrack),
@@ -1183,6 +1130,7 @@ export const disposeMedia = () => {
       if (localMediaStream) {
         localMediaStream.getVideoTracks().forEach((track) => {
           track.stop();
+          localMediaStream.removeTrack(track);
           dispatch(
             slice.actions.setTimelineMessage(createSoraDevtoolsMediaStreamTrackLog('stop', track)),
           );
@@ -1194,6 +1142,7 @@ export const disposeMedia = () => {
       const originalTrack = noiseSuppressionProcessor.getOriginalTrack();
       if (originalTrack) {
         originalTrack.stop();
+        localMediaStream?.removeTrack(originalTrack);
         dispatch(
           slice.actions.setTimelineMessage(
             createSoraDevtoolsMediaStreamTrackLog('stop', originalTrack),
@@ -1205,6 +1154,7 @@ export const disposeMedia = () => {
       if (localMediaStream) {
         localMediaStream.getAudioTracks().forEach((track) => {
           track.stop();
+          localMediaStream.removeTrack(track);
           dispatch(
             slice.actions.setTimelineMessage(createSoraDevtoolsMediaStreamTrackLog('stop', track)),
           );
@@ -1697,15 +1647,12 @@ export const setMicDevice = (micDevice: boolean) => {
       }
     } else if (state.soraContents.sora && state.soraContents.localMediaStream) {
       // Sora 接続中の場合
+      stopLocalAudioTrack(dispatch, state);
       state.soraContents.sora.stopAudioTrack(state.soraContents.localMediaStream);
     } else if (state.soraContents.localMediaStream) {
       // Sora は未接続で media access での表示を行っている場合
       // localMediaStream の AudioTrack を停止して MediaStream から Track を削除する
-      state.soraContents.localMediaStream.getAudioTracks().forEach((track) => {
-        track.enabled = false;
-        track.stop();
-        state.soraContents.localMediaStream?.removeTrack(track);
-      });
+      stopLocalAudioTrack(dispatch, state);
     }
     dispatch(slice.actions.setMicDevice(micDevice));
   };
@@ -1776,20 +1723,105 @@ export const setCameraDevice = (cameraDevice: boolean) => {
       }
     } else if (state.soraContents.sora && state.soraContents.localMediaStream) {
       // Sora 接続中の場合
+      await stopLocalVideoTrack(dispatch, state);
       state.soraContents.sora.stopVideoTrack(state.soraContents.localMediaStream);
     } else if (state.soraContents.localMediaStream) {
       // Sora は未接続で media access での表示を行っている場合
       // localMediaStream の VideoTrack を停止して MediaStream から Track を削除する
-      state.soraContents.localMediaStream.getVideoTracks().forEach((track) => {
-        track.enabled = false;
-        track.stop();
-        state.soraContents.localMediaStream?.removeTrack(track);
-      });
+      await stopLocalVideoTrack(dispatch, state);
     }
     dispatch(slice.actions.setCameraDevice(cameraDevice));
   };
 };
 
+/**
+ * devtools のローカルにもっている MediaStream のうち Video Track と
+ * 映像処理を行っている MediaProcessor の停止を行う関数
+ * MediaStream から Track の削除も行う
+ */
+const stopLocalVideoTrack = async (
+  dispatch: Dispatch,
+  { soraContents, lightAdjustmentProcessor, virtualBackgroundProcessor }: SoraDevtoolsState,
+): Promise<void> => {
+  const { localMediaStream } = soraContents;
+  let originalTrack: MediaStreamTrack | undefined;
+  if (lightAdjustmentProcessor && lightAdjustmentProcessor.isProcessing()) {
+    originalTrack = lightAdjustmentProcessor.getOriginalTrack();
+    lightAdjustmentProcessor.stopProcessing();
+  }
+  if (virtualBackgroundProcessor && virtualBackgroundProcessor.isProcessing()) {
+    if (originalTrack === undefined) {
+      originalTrack = virtualBackgroundProcessor.getOriginalTrack();
+    }
+    virtualBackgroundProcessor.stopProcessing();
+  }
+  if (originalTrack !== undefined) {
+    originalTrack.enabled = false;
+    // track enabled = false から sleep を sleep を入れないと配信側にカメラの最後のコマが残る問題へのハック
+    // safari はこれで対応できるが firefox は残ってしまう
+    await new Promise((resolve) => setTimeout(resolve, 100));
+    originalTrack.stop();
+    localMediaStream?.removeTrack(originalTrack);
+    dispatch(
+      slice.actions.setTimelineMessage(
+        createSoraDevtoolsMediaStreamTrackLog('stop', originalTrack),
+      ),
+    );
+  } else {
+    if (!localMediaStream) {
+      return;
+    }
+    localMediaStream.getVideoTracks().forEach((track) => {
+      track.enabled = false;
+    });
+    // track enabled = false から sleep を sleep を入れないと配信側にカメラの最後のコマが残る問題へのハック
+    // safari はこれで対応できるが firefox は残ってしまう
+    await new Promise((resolve) => setTimeout(resolve, 100));
+    localMediaStream.getVideoTracks().forEach((track) => {
+      track.stop();
+      localMediaStream.removeTrack(track);
+      dispatch(
+        slice.actions.setTimelineMessage(createSoraDevtoolsMediaStreamTrackLog('stop', track)),
+      );
+    });
+  }
+};
+
+/**
+ * devtools のローカルにもっている MediaStream のうち Audio Track と
+ * 映像処理を行っている MediaProcessor の停止を行う関数
+ * MediaStream から Track の削除も行う
+ */
+const stopLocalAudioTrack = (
+  dispatch: Dispatch,
+  { soraContents, noiseSuppressionProcessor }: SoraDevtoolsState,
+): void => {
+  const { localMediaStream } = soraContents;
+  if (noiseSuppressionProcessor && noiseSuppressionProcessor.isProcessing()) {
+    const originalTrack = noiseSuppressionProcessor.getOriginalTrack();
+    if (originalTrack) {
+      originalTrack.stop();
+      localMediaStream?.removeTrack(originalTrack);
+      dispatch(
+        slice.actions.setTimelineMessage(
+          createSoraDevtoolsMediaStreamTrackLog('stop', originalTrack),
+        ),
+      );
+    }
+    noiseSuppressionProcessor.stopProcessing();
+  } else {
+    if (localMediaStream) {
+      localMediaStream.getAudioTracks().forEach((track) => {
+        track.stop();
+        localMediaStream.removeTrack(track);
+        dispatch(
+          slice.actions.setTimelineMessage(createSoraDevtoolsMediaStreamTrackLog('stop', track)),
+        );
+      });
+    }
+  }
+};
+
 // Lyra の初期化
 export const initLyra = () => {
   return async (_dispatch: Dispatch, _getState: () => SoraDevtoolsState): Promise<void> => {