How to respond to a breakpoint set in drag & drop within a tableview

If I set a breakpoint in drag and drop within ...AcceptDrop... [in a NSOutlineView], both the app and Xcode hang. The only way I know to handle this is to force the app to quit then open Xcode. This shows the breakpoint, but the app can not continue.

Is there a better way to handle this?
How to respond to a breakpoint set in drag & drop within a tableview
 
 
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