Active Stylus: have to switch to desktop twice for full input

performancebug

GPD Win Max 2 2025 HX370
GPD Stylus
KDE

1. Boot into Gaming Mode
2. Switch to Desktop
-System Settings > Drawing Tablet > Pen > Test Tablet
-Tracking and pressure work but tilt is TX:0 TY:0. -No apps pick up tilt,
-libinput debug-event shows accurate tilt
3. Switch to Gaming Mode
4. Switch to Desktop
-Everything works
5. Reboot, back to 1.

Any ideas how to get it working first desktop switch?