content: I found a bug. I have android 6.0.1 on a Lenovo Tab 10. The app offers two opportunities to make annotations. One involves using a long press anywhere on the PDF and then annotating. Another involves tapping the blue pen circle. If you long press all freehand highlighting marks shift down and no longer highlight what they are meant to highlight. Very frustrating. Could you fix this However if you click the blue pen to make your annotations everything works out. Otherwise I am very happy with this application.