fix deadlock after "cut to note", closes #1030

src/public/app/widgets/component.js

@@ -82,6 +82,10 @@ export default class Component {
         let release;
 
         try {
+            if (this.mutex.isLocked()) {
+                console.debug("Mutex locked for", this.constructor.name);
+            }
+
             release = await this.mutex.acquire();
 
             await fun.call(this, data);
@@ -93,4 +97,4 @@ export default class Component {
             }
         }
     }
-}
+}