I keep running into the same issue, whenever I add shortcodes or raw code into an element like Classic Raw or even a normal text box - as soon as I save the page it’s no longer editable.
After I’ve saved the page it no longer lets you select or edit the code on that element, only showing the containing row and the image below. I’ve tried turning off lots of plugins to see if that made any difference but it still always shows the same message.
This happens on all pages and on a couple of different site and servers, any ideas how to fix this?