It depends on the user. In my experience, older users (55+) are particularly incensed when there's any inconsistency between what's visible in the editor and t

It depends on the user. In my experience, older users (55+) are particularly incensed when there's any inconsistency between what's visible in the editor and the outputted page (e.g. "I've been trying for hours, but I can't get the 'e' in this line to line up with the 'h' in the line above it!").