This has actually turned into a pretty big issue for me and is preventing both shutdown and start up with the dock plugged into the laptop. I have disabled the linux grub bootloader and am only running windows at this point, and am still having issues with booting the laptop with the dock plugged in.
It is preventing the laptop from posting at boot up and sometimes ramping the fans up and preventing the computer from shutting down when the dock is plugged in. You can see my separate thread on this issue here: USB-C DisplayLink Dock Prevents Shutdown and Post