Mail Split View Not Working in High Sierra

Discussion in 'macOS High Sierra (10.13)' started by Phrasikleia, Dec 6, 2017.

  1. Phrasikleia macrumors 601


    Feb 24, 2008
    Over there------->
    In Apple Mail on my Mac running OS X 10.13.2 (High Sierra), I'm not getting the split view in full screen mode. No matter what I do, replies and new messages bring up a new window that hovers over top of everything instead of appearing in a split fashion off to the right.

    I am viewing in full screen mode. I do have the option checked in Mail's preferences to "Prefer Opening Messages in Split View When in Full Screen".

    What could be wrong?
    --- Post Merged, Dec 6, 2017 ---
    I discovered that there is a setting in Mission Control that also needs to be enabled. It's the one about displays having separate spaces.

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