OSK doesn't fit on screen in landscape screen orientation
I find that Gnome Shell integrated OSK doesn't fit on screen in landscape screen orientation. This issue is reproducible with no screen scaling (DEXP Ursus 10XW, 1280x720 screen, no fonts or screen scaling) with fonts scaling (Dell 7140 and Dell 9250, 1920x1080 screen, x1.3 fonts scaling is set in Gnome Tweak Tool) and with Gnome native screen scaling (Dell 7285, 2880x1920, 200% default screen scaling).
On attached screenshot you can see that bottom line of buttons is visible and accessible, however on HD and FullHD displays situation is worse: bottom line is not available at all, so OSK is unusable in landscape screen orientation on those tablets.