Your dial is just jealous of the white L lenses, its trying its best, give it a break!
But no, i havent seen that on any canon camera I've owned.
6D, 60D, 17-40L, 70-200L 2.8 IS II, 24-105L, Sigma 35mm 1.4, 40mm Pancake, Helios 44-M4 (55mm f/2), 1.4X Extender III, 430EX II, Yongnuo YN-622 Flash Triggers.
EOS-M, 22mm, EF Adapter.
And Canonet QL-17 GIII Film!