This thread is the continua of the thread How to confirm successful bug report in Debian reportbug? because I could not file the bug report by
bugreport in Debian.
Assistive technology > On Screen keyboard: only Qwerty seems to be supported
Problem: no Dvorak support, although using Dvorak keyboard
Fig. 1 When English Dvorak keyboard active, but showing Qwerty keyboard on the left-hand-side screen
The same amount of features on X11 and Wayland, so not a driver issue, but a lacking feature in the system.
OS: Debian 9.1
Window manager: Gnome 3.22