dunno what you mean by "spring back".
the enter button led will flash when you're editing a pattern and havent saved it yet. hit the enter button to save it. that's it. if you're having a problem then i expect you have a fault in your sequencer section, probably somewhere around the eprom or cpu. this seems to be an issue unique to your Nava so far.
..." lots of bugs, bad documentation and issues here and there "
FALSE. There are a couple people on here who seem to take their frustrations out on the hard-working folks at e-licktronic rather than be humble about their own skills or experience with kits. You may have to do troubleshooting to get your kit to work, there may be bugs, this is par for the course.
The documentation is EXCELLENT. Support is excellent. Lots of bugs? Well, some, but it's a pretty solid, very usable machine on the latest firmware, and most kits have a much longer wait for bug fixes and OS updates.
It compares very well to other kits out there IMO. Ever built a xoxbox with the stock firmware? Or tried to source your own xoxbox? Ever built a 9090?
I know there's lots of kits I haven't tried, and there are some strong contenders out there, but in my experience e-licktronic makes the closest thing to a polished commercial version of a kit I have experienced. I love them all though. If you're "really sad" from this experience, you came into it with the wrong expectations and attitude for working on kits.