Hi peter,
I am not sure if this was reported already, but I have noticed, when opening an oxygen template, inside the builder all element ids are gone and nothing is shown inside, when I deactivate the MetaBox AIO plugin, all goes back to normal.....
I have further tested this : I created a new template, (with MB AIO activated) added elements, no problem, then I save, close the builder, reopen the builder with the recently saved template, all the element ids are gone again, and the builder is blank, deactivated MB AIO and everything goes back to normal.
Wordpress send me a 'your site is experiencing a technical issue' email
Any ideas ?
Posts , Pages and Reusable Parts work without any problems