Blank CMS UI while using password managers

We are seeing that password managers like LastPass and Bitwarden can cause blank screens in the CMS UI.


In the console the following error will occur. 

Uncaught DOMException: Failed to execute 'insertBefore' on 'Node': The node before which the new node is to be inserted is not a child of this node.

This is due to the DOM changes password managers make and our Dojo code's interaction with the DOM.  

There are currently no fixes for this except to disable those browser extensions while using the CMS. Browser based password managers are not currently supported with the CMS. In the long-term we will support their use and once that begins this KB will be updated.