With the newest core-elements 0.4.0+5 we're getting an exception log on the console from the core-header-panel. It seems to be an issue with the initialization, it does not affect the functionality though.
Exception caught during observer callback: TypeError: Cannot read property 'outerScroll' of undefined
at core-header-panel.Polymer.modeChanged (http://localhost:8080/index.html:6148:18)
at core-header-panel.g.invokeMethod (http://localhost:8080/packages/polymer/src/js/polymer/polymer.js:13:25932)
at core-header-panel.g.notifyPropertyChanges (http://localhost:8080/packages/polymer/src/js/polymer/polymer.js:13:24037)
at Object.x.report_ (http://localhost:8080/packages/polymer/src/js/polymer/polymer.js:12:18274)
at Object.S.check_ (http://localhost:8080/packages/polymer/src/js/polymer/polymer.js:12:22612)
at c (http://localhost:8080/packages/polymer/src/js/polymer/polymer.js:12:12181)
With the newest core-elements 0.4.0+5 we're getting an exception log on the console from the core-header-panel. It seems to be an issue with the initialization, it does not affect the functionality though.