On MacOS you handle multiple monitors very badly
I have the PDF view on my other monitor, not the laptops. When a dialog box comes up (search: no more instances) it ALWAYS goes to the laptop screen and is hidden. And of course it is model, so I need to find the stupid thing and press OK (another design friggen issue!)
To do this, I have to go down to my task bar, on the PDF viewer icon, right click to show all windows, and then finally the model dialog box pops up, on the laptop screen, not where the other window is.