Try xcb libs 3

Author: raub

.github/workflows/test.yml

@@ -42,4 +42,4 @@ jobs:
           sudo apt-get install -qq libgles2-mesa-dev libxcb-cursor0 libxcb-icccm4 libxcb-keysyms1 libxcb-shape0 libxcb-xkb1 libxkbcommon-x11-0
           sudo apt-get install -qq libdbus-1-3 libxcb-image0 libxcb-randr0 libxcb-render-util0 libxcb-xinerama0 libxcb-xinput0 libxcb-xfixes0
           # QT_QPA_PLATFORM=xcb xvfb-run --auto-servernum npm run test-ci
-          QT_QPA_PLATFORM=xcb xvfb-run --auto-servernum node test/debug.js
+          QT_DEBUG_PLUGINS=1 QT_QPA_PLATFORM=xcb xvfb-run --auto-servernum node test/debug.js