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Create a javascript file with following content: var p=parent; if(p.name!='foo') p = p.p; var a=p.a; Then open Navigator window. It will display an endless value for variable 'a': @exp;p@pro:p.p.p.p.p.p.p.p.p.p.a|parent.a|parent.p.a|parent.p.p.a|parent.p.p.p.a|....
@szd: Which build do you use? Could you please try a dev build. Should be already fixed. If you will have still problems, please, reopen.