@ganeshvarahade good catch, it's a problem with the mdPickers library and AngularJS 1.6.x. I had enabled a workaround in the main UI app.js but didn't add it to the adminTemplate.
You will need to edit your app.js, find the line $compileProvider.debugInfoEnabled(false); and add this line before or after it - $compileProvider.preAssignBindingsEnabled(true);