Win32 apps for non-primary users

We have more and more requests coming in for multiple users on one shared device. We're currently doing tests with Win32 apps on 1903 devices with multiple users (ESP enabled).

So for now it seems that all Win32 apps get stuck on the 2nd user, while on the 1st/primary user everything works fine. Store apps seem not to be affected.

We're still investigating but could not find any helpful information so far. Anyone else experience this?

Thank you!

Tom