my bad Just tried again and it worked. II just meant that it begins executing but then something goes wrong in one line. But I tried now and it worked. I noticed that when you click on a word while it suggests its auto-complete, it does not auto-complete. It is also very tricky inserting the cursor in the middle of a word. But other than that and some squeezed buttons, it works like a charm. Also, if you COMBINE it with ctrl shift R, it makes the app fill the entire screen as opposed to having half of the screen empty!
Opera has a portrait vkb too. Apparently, it is easier to do it for an app than for the whole system