Hello, OnBoard 1.2 doesn't appear on Fullscreen Applikation in Ubuntu Mate 16.04.
I have fixed it. You have to unselect the Option that the keyboard appears on Bottom.
That makes sense, struts would be invisible in full-screen applications, just like panels. I doubt we can change this behavior from Onboard's side. This is the window manager's decision.
Duplicate of:
https://bugs.launchpad.net/onboard/+bug/326120 https://bugs.launchpad.net/onboard/+bug/1458402
Bug watches keep track of this bug in other bug trackers.
I have fixed it. You have to unselect the Option that the keyboard appears on Bottom.