Uhg. Multiple screens (second being a 21" cintiq). Screen is off. Dialog for material chooser opens on the OFF screen. Annoying enough. Gathering the windows or mirroring (same display on same window) and making imac's built-in retina the only screen does not affect that dialog. When I reduce the window (via spaces), the Poser app shows as bigger than the screen. although the app window is screen size, the app window also includes the off screen dialog. Again, annoying. More so: there is no keystroke that closes that Poser dialog (LIKE EFFING ESC!!!!!!!!!!!!!! GUI 101: esc closes dialogs; stops current operation regardless of what it is. Do not pass GO do not collect $200).

Nothing can be done to the main app window as there's an offscreen dialog blocking. The application is effectively locked up. Sure, It can be unceremoniously killed. Or, at great annoyance, I unbury my cintiq and turn it on. But nowthe dialog is on the screen with the app which makes that screen larger than my physical. I can't force the dialog onto the second screen. I can't get to it because the app window can't be resized or moved.

So I think I'm clever, and up the scaling (Mac can do this on retina). Now I can see the dialog. I click the dialog close button and the entire application crashes.

Dudes. Closing a dialog box, once I could get to it, crashed the entire application!

Mojave. iMac Pro. 128Gb RAM. 18 core 2.3GHz Xeon. 2TB SSD. Latest Poser 12 freshly installed this morning.

No I don't run a later OS. Catalina install bricked a 15" MBP so badly it had to be physically replaced. Something about the disc encryption being corrupted halfway through the install , said Apple. So I'm waiting for some compelling reason to update, and a hopefully more stable OS. Mojave works just fine.