motion/ui/ui_control_wrapper.rb in bubble-wrap-1.4.0 vs motion/ui/ui_control_wrapper.rb in bubble-wrap-1.5.0.rc1

@@ -8,9 +8,10 @@
         @callback[events] = []
         removeTarget(nil, action: nil, forControlEvents: events)
       end
 
       @callback[events] << block
+      block.weak! if BubbleWrap.use_weak_callbacks?
       addTarget(@callback[events].last, action:'call', forControlEvents: events)
     end
   end
 end