No 4K resolution for Dell U4320Q monitor
 

My set up is Dell U4320Q monitor, Dell D6000 dock and Macbook M1. There is no option to select 4K resolution for the monitor when I connect it to the docking station, only 1920x1080 and smaller (screenshot).

When I connect this monitor straight to the Macbook it defaults to 4K and I can select from any resolution option (screenshot).

Also, before this monitor I had LG 43UD79 and there were no problems with running it at 4K though the dock, so I think the issue is related to DisplayLink monitor specific resolution support. I am running DisplayLink 1.4 and tried running 1.5 beta but did not have any luck.

At the moment I'm connecting my monitor separately from the dock which is super annoying :'-(
Any ideas how to resolve this issue?