I have a 3 monitor system. When my monitors were 2560x1600 left, 3840x2160 (4k) center, and 2560x1600 right - DOpus 10 worked fine. I upgraded thinking that surely by now this would be fixed since 4k is so popular now.
Now that I have all three monitors at 4K (no font scaling), When DOpus is on the left or right monitor, every time a menu is displayed, it shows briefly on that monitor, then it is repositioned to the main monitor. (The main monitor being my center monitor). This happens for the main program menus, and context menus. There are also issues with dialogs being forced to the main center monitor.
Best to report the problem to them so they can fix it properly. Their tools have been causing people a lot of problems lately, and you shouldn't have to exclude individual processes or classes to stop them breaking things. If what they're doing is so unreliable, it should probably work on an inclusion list rather than an exclusion list.
The class names may be dopus.button.display or dopus.button.display.popup