mac: Settings menu renamed to Preferences

Apple changed the Preferences menu item to be a Settings menu item. I have no idea when this was, but it seems to be the current convention to use Settings.

For what I assume is backwards compatibility reasons, Qt still moves a menu item called Preferences to the app menu. Nice.

However, while investigating a separate problem (https://bugreports.qt.io/browse/QTBUG-111798) I observed some very odd behaviour.

When I first open the app, the menu says "Settings..."

When I change focus, then change back, the menu says "Preferences..."

This applies both within the app (ie. if the menu invokes a QDialog - as it does in my complete app).

This also applies when switching to another app and back.

This applies no matter if the menu item is called "Preferences" or "Settings".

Before

After

I have attached a minimal example that reproduces this (guide.zip). It just needs to be built.

unzip guide.zip
cd guide
qmake
make
open guide.app

The minimal example does not connect the preferences menu item to anything, but changing app focus also demonstrates the issue.