Agree to many of the sentiments in this thread.
Fixes need to come faster, and there needs to be more pride in the quality that is put out.
If that means writing a full blown application to test with then so be it; using the examples for smoke testing is not good neough.
Still on 4.1.3 here, mainly due to showstoppers in the 4.2 releases I have tried, and partly due to the change to Sencha Cmd imposing changes to how themes are laid out not fitting at all well with how our products and shared repos are structured.
Hope to upgrade at some point, but way down the list at the moment...