Error (18108): Can't place multiple pins assigned to pin location Pin_XXX in Quartus 18.1.2 for a partial reconfig design

I made this simple test to show clearly the problem I met. In this design it suppose to fully configure the device with AVST, and then PR with AVMM using a PR controller IP, in internal host PR mode. Several LED pins are assigned to AVST dual purpose pins, which are set as regular IO after configuration , and errors occur during fitter.

To use this test, please set your local Quartus directory in the fist lines of pin_test/synthesis/synth.sh and then run it to see the problem.