And with “after” you mean “before”?
“before/after” view enabled
lock the “before” view
do all/some changes until it’s OK
then unlock the “before” view, that is refreshed and everything is ready to be locked again for any further improvement to be compared.
I would understand this a little more. Of course, having something like a button to manually refresh would me more elegant and comfortable than having to unlock and do and undo something in the editor to refresh the before view.
I have never used the before/after view, but I have just seen the tooltip:
“will follow the After view one step behind”
I’m propably missing something, but it doesn’t look “one step behind” to me.