I just tried the latest git (d9df93578b74785c08ba860b4c9aa23b0c89c91c). The jittering is still there. However, no black screen so far.
I just tried the latest git (d9df93578b7478 5c08ba860b4c9aa 23b0c89c91c) . The jittering is still there. However, no black screen so far.