Short and simple: No. The apps will always adapt to the resolution settings of the primary display device, which obviously your Cintiq is not. You have to switch things around or buy a suitable second monitor.
Thanks man, even though that's obviously not what I wanted to hear
How does the app determine which UI to use? Can I force the high-dpi UI on all monitors somehow?
The correct answer, but I do feel that Adobe could fix this situation. I use other apps that have no problem switching scaling between monitors of different resolutions on Windows 10. I'm sure it's not a trivial fix. I'm also sure that Adobe is making a ton of money off the new subscription enslavement we've all bought into and could afford to fix bugs like this. It IS a bug.
You have to set your primary monitor in Windows 10 display settings to whichever monitor has the correct scaling you want the Adobe apps to start with.