PBJS Proposed Change

pbjs.js

...
    function r(e, o) {
        pbjs.initAdserverSet = !0,
        pbjs.requestBids({
            adUnits: d(e),
            bidsBackHandler: function() {
                googletag.cmd.push(function() {
                    pbjs.setTargetingForGPTAsync(),
                    if (typeof o !== 'undefined') {
                        window.googletag.pubads().refresh(p(e), o)
                    }
                    else {
                        window.googletag.pubads().refresh(p(e))
                    }
                })
            }
        })
    }
...