Love it but found a bug – Tableau Mobile Review

I love the mobility of Tableau on the run, especially easy access to dashboards on my iPad in meetings. Nice improvements in how the dashboard workbooks are organized and accessed. Also, much faster processing speed! However, there seems to be a bug in that drill-downs are not working. The '+' sign doesn't show up. Can this be fixed please?
Review by Webefine on Tableau Mobile.