I don't use the suggested workout these days much, but when I have (maybe 2/3 of time) there is a firmware bug that it crashes watch to the Bluetriangle and restarts entirely. I have restarted and reset the watch during this time without any change. I see a post in the 255 forum of the same issue (9months ago!)
Anyone else seeing this?
Just tested it on my watch for run and indoor bike.... both came up just fine. I did a hard bike workout this morning (my own custom)
thx!