Change Log
We prioritize consistency over performance
The most recent updates aimed to enhance performance, but we encountered inconsistencies with HTML updates during testing. To ensure greater consistency and predictability, a significant change was implemented, replacing morphdom with idiomorph.
There are other well known libraries that already made that change:
We are indeed using idiomorph and we'll include it officially as part of Turbo 8. We started with morphdom, but eventually switched to idiomorph as we found it way more suitable. It just worked great with all the tests we threw at it, while morphdom was incredibly picky about "ids" to match nodes. Also, we noticed it's at least as fast.
-- Jorge Marubia / 37Signals
That helps on decision making about changing the core of the library which is the dom diff engine.