I had my bike tuned up (tear down, regreased, reassembled) and noticed there didn’t seem to be much clearance on my crank arm when I picked the bike up. That was mid-July.
I rode on damp roads for the first time since then on Saturday and my bike got grit all over it. So I cleaned it today and noticed a grinding noise when I rotated my crank arms. Once I got the bike clean the noise was gone, but now all the paint has been scrubbed off on my bottom bracket behind the crank arm.
I’ll be taking the bike back to my LBS and demand they fix this at no charge. I’m pretty sure the mechanic forgot a spacer but need a more informed opinion since I don’t know very much about bike maintenance or repair.
EDIT: as pointed out in the replies, the lack of spacer or clearance is the way the Domane is designed. It is likely that my bike was like this all along and I was just lucky that it hasn’t rubbed the paint off until now. I’ll be asking if a spacer can be added or some way to limit this from causing further damage to my bottom bracket.
Here are two pictures showing the damage and the lack of clearance.