Since Mocrosoft Windows and Microsoft Office started supporting touch screen, and some Windows devices (see: https://www.microsoft.com/en-us/windows/devices) also includes touch screen, LibreOffice should be friendly to touch screen. This bug is used to track issues with touch screen behaviors.
MSDN also has documents about improve touch screen experiences https://msdn.microsoft.com/library/windows/desktop/dn742468.aspx
*** Bug 120555 has been marked as a duplicate of this bug. ***