Is it a known limitation of Parallels that one can not use mac OS X guests to display in full screen over all attached monitors? Notably the "Use all displays in full screen" option does not seem to be available for a mojave Mac OS X guest:

Setup:
<UseAllDisplays>0</UseAllDisplays>
However changing it to 1 does not seem to make a difference.
Setup:
- Parallels Version 14.1.3 (45485)
- Host + Guest OS: macOS Mojave 10.4.3
<UseAllDisplays>0</UseAllDisplays>
However changing it to 1 does not seem to make a difference.
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