diff --git a/src/flutter/dart/lib/models/FloatingItem.dart b/src/flutter/dart/lib/models/FloatingItem.dart
index 45a306dce..75d5157ef 100644
--- a/src/flutter/dart/lib/models/FloatingItem.dart
+++ b/src/flutter/dart/lib/models/FloatingItem.dart
@@ -32,12 +32,7 @@ class FloatingItem implements ItemWithTitleBar {
 
   @override
   void close() {
-    if (!DockRegistry.instance.containsFloatingItem(this)) {
-      // we're closed already, can be removed once we can _groupCountChangedConnection.disconnect()
-      return;
-    }
-
-    // _groupCountChangedConnection.disconnect(); signals_slot bug
+    _groupCountChangedConnection.disconnect();
     DockRegistry.instance.removeFloatingItem(this);
   }
 }
diff --git a/src/flutter/dart/pubspec.yaml b/src/flutter/dart/pubspec.yaml
index 6dd5a7df3..31caaf6f0 100644
--- a/src/flutter/dart/pubspec.yaml
+++ b/src/flutter/dart/pubspec.yaml
@@ -10,7 +10,7 @@ dependencies:
   meta:
   flutter:
     sdk: flutter
-  signals_slots: ^1.1.0
+  signals_slots: ^1.1.1
 
 dev_dependencies:
   lints: ^5.0.0