I noticed this yesterday. When you click on a row or element in the X Pro Cornerstone editor, it no longer shows you which row it is in the left-hand-side layout editor. Also, if you use the layout editor and click on a section, it no longer takes you to that preview section on the website.
The only way I can tell which row it is, is by duplicating the row and seeing which one on the page duplicates. This is so frustrating!!!
Someone else has mentioned this a few days ago in another comment, however, this comment is in the middle of another topic and gets easily lost, They said “when i select a row in the left layout editor it is not being highlighted on the page. so now i must guess what i selected?”. Here is a link to it https://theme.co/apex/forum/t/changes-in-x-pro-and-cornerstone/11843/11
I also can’t use the new text elements as the default fonts are completely wrong - NOT inline with the default website fonts and sizes I am using across the whole website. I have a lot of other issues and concerns that I have listed in other posts - and others that I haven’t listed.
I’m not sure what the X Theme team is doing. It seems the X Theme and X Pro is broken. I am a long time user of the X Theme and would normally rate it 5 Stars and tell everyone else to use it. Now I Can’t recommend it to anyone - its now too complicated and too broken to recommend.