[M_Six]

I was out a couple of days ago and was climbing a hill after coming down another. I carried lots of speed into the hill and about halfway up I tried to shift to the small ring up front. Di2 decided to get finicky and wouldn't make the shift. I suddenly found myself in a gear I couldn't use to make it up the hill and I was moving too slowly to have time to shift. Luckily I was able to unclip and dismount. But it was the first time in years I had to walk up a hill. After I got going again, the Di2 worked fine. Just some weird glitch.