Thread:Brandon Rhea/@comment-4586992-20120331024803/@comment-3508190-20120331171529

I do know what Courier looks like. But I failed to notice that the source editor has switched to Courier. That's why you confused me with that one. :) And no, sorry, I don't know how to change it back. Brandon probably does. I should get out of the way. Replying to your post may have been a mistake to begin with. At first sight it looked like a question a non-staff-member can answer. If this a bug report, I can't help you.

One thing though: I was forced to do a bit of reverse engineering on the editor recently and I was surprised how much goes on behind the scenes, when you switch. The two editors are not just different views of the same editor. They're different editors that store their data in different formats and display it differently. Every time you switch your text has to be translated. That translation is rather complicated and to be honest I'm surprised it works as often as it does...