Yes. When you use altdq_dqs megafunction and set RLDRAMII mode as x18 or x36 in Parameter Settings page, you may find the port width of dqs_bus_out in the IP top file is mismatched.
Declaration of dqs_bus_out in IP top file is
output [0:0] dqs_bus_out;
The expected declaration of dqs_bus_out should be:
output [1:0] dqs_bus_out;
As a workaround, please change the port width of dqs_bus_out manually. This issue will be fixed in Quartus® II software future version.