No selectors Chrome (Nuxeo webui page)

Hello Comunity,

I’m trying to find ways to automate a open-source Nuxeo DMS platform web UI. Unfortunatelly it has dropped support for IE11 so the web ui works only in chrome and ff.
I tried with both browsers with extension enabled. They are working fine with other pages. and none of them is able to indicate anything within the page. The UiExplorer indicates only the whole browser instance.

The application server uses OpenJDK8. I hava Java extension enabled. It is loaded by the appliacation server, as below.

The webui interface looks like this.

I managed to find an UI tree but unfortunatelly no node leads to an UI element. Nothing indicates Java in nodes.