I did an indoor brick today (indoor bike, transition, treadmill). Upon ending the workout, I viewed the summary, and when I hit save, the watch immediately crashed and went to the Garmin logo at which point the watch restarted. When the watch was finished booting, it went back to the post-workout option screen and it allowed me to save. However, the treadmill portion of the workout was mildly corrupted - when I go into garmin connect to edit the summary data of the treadmill portion of the workout, there is no option to adjust calories consumed, fluid consumed, or est. sweat lost.
Weird stuff.