diff --git a/Editor/AGS.Editor/Panes/Room/RoomEditFilters/BaseAreasEditorFilter.cs b/Editor/AGS.Editor/Panes/Room/RoomEditFilters/BaseAreasEditorFilter.cs
index b65b1cd78eb..ce800536e7e 100644
--- a/Editor/AGS.Editor/Panes/Room/RoomEditFilters/BaseAreasEditorFilter.cs
+++ b/Editor/AGS.Editor/Panes/Room/RoomEditFilters/BaseAreasEditorFilter.cs
@@ -300,9 +300,10 @@ private bool IsLocked(int area)
 
         public virtual bool MouseUp(MouseEventArgs e, RoomEditorState state)
         {
-            _mouseDown = false;
             if (e.Button == MouseButtons.Middle) return false;
+            if (!_mouseDown) return false; // drawing was not triggered
 
+            _mouseDown = false;
             AreaDrawMode drawMode = Enabled ? _drawMode : AreaDrawMode.Select;
 
             if (IsLocked(_selectedArea) && drawMode != AreaDrawMode.Select) return false;