I left the canon camp due to this primarily (PITA at weddings). Hopefully they fix the 12fps af servo issue on the 1DX but I am glad I didn't wait around for a fix.
Then why are you here???
16-35L, 24-70L II, 70-200L II, 100-400L, 50L, 85L II, 135L, 24TSE, 40, 100 macro, 600RT x 4
I have more photo gear than I need. The blame lies squarely with Canonrumors