Olympus released firmware 2.1 for the OM-D E-M1 Mark II and it addresses issues with the Leica 200mm
Corrected issue of C-AF not operating correctly when using the “LEICA DG ELMARIT 200mm F2.8 / POWER O.I.S. (H-ES200)” interchangeable lens produced by Panasonic.
You can download the update here.