Issue
Symptoms
When using GlideOverlay, it is not working as expected
Release
Kingston, London, Madrid
Cause
GlideOverlay has been deprecated
Resolution
GlideModal has replaced GlideOverlay which is the new method to display content overlay
Additional Information
https://developer.servicenow.com/app.do#!/api_doc?v=london&id=c_GlideModalClientSideV3API