It's really an XWayland application, i.e. it uses X, whose protocol is forwarded to Wayland. That's why in this article you need to pass -X to Sommelier: https

It's really an XWayland application, i.e. it uses X, whose protocol is forwarded to Wayland. That's why in this article you need to pass -X to Sommelier: https://medium.com/@kennethrohde/sharp-looking-vscode-on-chrome-os-e8edf7c1411d https://medium.com/@kennethrohde/sharp-looking-vscode-on-chr... That post also highlights how, because it's not a Wayland native app, VSCode will still look crummy when e.g. you use it on monitors with varying DPI. Real Wayland apps have multiple, per-screen DPI settings: https://wiki.gnome.org/Initiatives/Wayland/XWayland https://wiki.gnome.org/Initiatives/Wayland/XWayland "Multi DPI intends to allow clients to seamlessly move around on a display with multiple monitors connected, where each monitor may have very different DPIs, thus different scales, without any sudden size changes or glitches, while at the same time allowing clients to switch between different scaling factors."