enhace rich editor
In Rich Editor when something changes showing to code (when focusing to edit) maintain block height to enhace reading and editing (avoid moving up the next text). Also a "WYSIWYG" popup could be helpfull as a next step.
Thanks for the feedback. Watch for rich text improvements soon!
Javier Dottori commented
I would suggest something similar to Authorea to edit tables, images and ecuations. The way space used by equations is reduced or increased when editing is confusing. Maybe double click for this kind of object is better. Also is easier to interpret them and paste an image in html. This would help both reading and control of cursor.