Clean backport of macOS tabbed windows fix. Verified on Mac (the fix is macOS-specific).
------------- Commit messages: - 8263169: [macos] JavaFX windows open as tabs when system preference for documents is set Changes: https://git.openjdk.java.net/jfx11u/pull/5/files Webrev: https://webrevs.openjdk.java.net/?repo=jfx11u&pr=5&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8263169 Stats: 174 lines in 2 files changed: 174 ins; 0 del; 0 mod Patch: https://git.openjdk.java.net/jfx11u/pull/5.diff Fetch: git fetch https://git.openjdk.java.net/jfx11u pull/5/head:pull/5 PR: https://git.openjdk.java.net/jfx11u/pull/5
