I have a Microsoft Surface 3 tablet that I am trying to set up as a dedicated Home automation control display.
It will run a web page in kiosk mode where my home control dashboard resides.

However. In order to make this work I need to have a good functioning touch control.
The touch works well but the onscreen keyboard does not work in some fields for some reason?

It works in e.g. address bar in web browser, but it does not work when I need to enter a Password in a Ubuntu authorize popup or e.g. in the search field in the app launcher...

Any ideas on what can be the issue?