with guest qxl driver for better display effect, mouse cursor misposition and some images overlap

I tried latest main spice-html5 to connect a vm guest( with only one video) installing windows 7 ( on CentOS7 default qemu 1.5.3,libvirt 4.5.0)，it work well including video,audio without guest qxl driver . But with guest qxl driver for better display effect, mouse cursor misposition and some images overlap.We also tried spice-html5 and spice-web-client(which work better but some icon and text mirror vertical.) with qemu5.2.0,libvirt7.2.0 and spice-server 0.14.3, the same result . We tried to increase the video memory (ram, vram, vgaram) from default 16MB to 65MB, the same result. By the way spice-server 0.14.3 support for WebSocket, this will allow to use spice-html5 without proxy.