I thought I would post this. I was a little apprehensive upgrading to release 5.5 because of the crashes people have reported on this forum. I have been on several 40 mile rides since upgrading to version 5.5.
I have not had any issues with battery life, no issues with crashing, no sensor disconnects (I have the Garmin speed and cadence, and I broadcast heart rate with my Garmin watch).
ClimbPro seems to be working well. It also updates in the Garmin Connect app on my phone very quickly.
I have not noticed any bugs at all to be honest. I am happy with this release.