I am running 4.1.8 and it worked fine - however teh Grand total wasnt adding up - even thou the shipping was defined correctly (including tax) teh grand total displays a toal less the shipping tax.
To fix I had to modify this line in minicart.tpl
Original
HTML Code:
minicarttotalcost=$minicart_total_cost minicartshipping=$minicart_shipping}
Modified
HTML Code:
minicarttotalcost=$minicart_total_cost minicartshipping=$taxed_shipping}
Hope that helps.