I have installed the official Android app, and can input title and question.
But, when I tap on the tags field, I am taken to the tags screen which consists of a field with a magnifying glass to the left. If I type in tags, there is no sign of haptic feedback and the magnifier does not react.
If I tap on the 'DONE' button nothing appears in the tag list at the bottom of the screen. Subsequently, if I press 'SUBMIT' the app manks because no tags are present and I cannot post.