Hi all, I'm compiling and running a customer application that uses multiple Xephyr windows, and they are all grey, instead of displaying the correct graphics. I'm on macOS 10.14.5 Host with Parallels 14.1.3, Host is Ubuntu 16.04 with apt-get of xcompmgr xserver-xephyr. I've tried both with HW acceleration on/off in the VM HW setup ... any suggestion? Thank you