MyDashboard link on touch screen devices

Hello all
i seem to have a problem with the My Dashboard button
when navigating between pages…for instance going from purchase orders to invoices…
the My dashboard button won’t take me back home. i have to hit the back button to go to the previous page and then the my dashboard will operate
this seems to only started to happen in the last couple of days…infact this is the first time i have realised something different.
using chrome Version 43.0.2357.134 m
many thanks
Simon