AF-MF not functioning properly (35mm L MK1)

[Jmerch92]

Hello I have a 35mm L MK1 lens and everything functions properly minus the manual focus. When I have it in AF it functions perfectly but when i switch to MF it still performs as though it was in AF. Does anyone know if this is common or if its easily fixable?

[Waddizzle]

If you are saying that the lens auto focuses, irregardless of the AF/MF switch setting, then it sounds like a bad switch.