Hi phlatt5th and Yves, thanks for showing me what you are seeing. It looks like some problem with child window z-ordering or hiding.

Do you see any change if you resize the main window after switching the view mode?

Another different thing you can try is to disable the new "rootless" / System Integrity Protection system mechanism that is apparently preventing the bundled XQuartz from running and then change the settings in MoI wineskin back to their original settings.

For the MoI wineskin settings, undo the checkbox modifications that were listed here: http://moi3d.com/forum/index.php?webtag=MOI&msg=6967.4

To disable rootless follow these steps:

1. Restart the computer, while booting hold down Command-R to boot into recovery mode.
2. Once booted, navigate to the "Utilities > Terminal" in the top menu bar.
3. Type  csrutil disable  in the terminal window and hit the return key.
4. From the Apple system menu select "Restart" to reboot the machine and System Integrity Protection will now be disabled.

If that does not help then to reenable System Integrity Protection follow the steps above, except use the  csrutil enable  command for step 3.

(Steps copied from https://www.quora.com/How-do-I-turn-off-the-rootless-in-OS-X-El-Capitan-10-11)


Does that work any better?

- Michael