I love installing updates to learn for the first time that functionality has been stripped away, with no option to replace it.
I'm speaking of WordPress 2.2 and that it now kills the iframe preview. No option to turn it back on...
I'm sure eventually (days or months, perhaps never) a plugin could restore it's functionality.
All in all though, it's getting frustrating in WordPress Land these days.
It would be extremely nice to detail these changes before new releases are made public. I mean, with 17 developers and other enthusiasts adding content daily to Dashboard, you'd figure there would be an opportunity. Perhaps even the developer's blog would have been a great place for it, no?
If anybody knows a solution for turning the post preview back on, I'm all ears.