I have made many websites and I have mostly stuck with TinyMCE as a choice of wisiwyg editor. My greatest concern with TinyMCE in Drupal has been that when you click on "Souce" button or "HTML" or "Disable rich text",it gives you a popup with allof the HTMLcode piled into a one continuous pile of code. This is really a pain in the neck, because it becomes impossible to read that code. This doesn't happen in Wordpress which preserves the line-breaks within the code and you can quickly switch between TinyMCE and HTML tabs to see the source code, and edit it if necessary.
Is this a bug? if not, how can we make the source code appear with line-breaks again?