Gnome3 + Onscreen Keyboard


i have a convertible laptop with pen input.
Gnome supports the pen and its buttons well, i have automatic screen orientation activated and when i convert the laptop it disables the keyboard and everything works nicely, except…

i can’t figure out how to activate the onscreen keyboard. When logging in via GDM, i get an onscreen keyboard, but in my gnome session i don’t get one. I would expect it to either automatically pop up once i tap into a text field or at least have some kind of menu button or gesture to activate it manually.

services.xserver.wacom.enable is enabled already. Any more things to do, or is this currently unsupported?