Some of the beta testers told me that they don’t like that the flickering updating of the html preview window in the current public beta releases of LIVEditor after they edited the html code (although the live updating of the preview window after editing css code is  flicker-less).

Well, I don’t like that too! So the good news is that in the new unreleased version of LIVEditor, the html preview updating is flicker-free!