Comment 0 for bug 1263592

Mir gets buffers confused when running both scroll and flicker demos

1. Start mir_demo_server_shell
2. sudo bin/mir_demo_client_scroll & sudo bin/mir_demo_client_flicker &
3. Alt+Tab between the two clients

Expected: Both scroll and flicker demos to be visible.
Observed: When the scroll demo is focused, the flicker surface becomes a mirror of the scroll surface. I only see two scrolls and no flicker.