We are running 1803 instant clones. We tried using the 2.17 agent and it didn't resolve the issue. I guess we could of rolled back to 2.15 however we created an executable of a ps1 script to add windows.immersivecontrolpanel appx package at login through UEM which resolved the settings not launching.
Sorry you're having the issue as well, but I'm glad I'm not the only one :smileysilly:.