Mac OSX: Context menu fails to activate item if pointer leaves and returns to menu before releasing RMB.

User presses RMB. Context menu opens. User moves pointer out of menu and then returns to menu. User releases RMB. Item under pointer fails to activate. On OSX only.

This is in my PyQt app which opens the context menu on receiving QContextMenuEvent. My app does not experience this on other platforms (Ubuntu.) I can probably provide a small test case in PyQt.

I think this is not a standard platform HIG behaviour, since the same actions behave differently in a native app (not using Qt.) In that case, the menu action is activated.

I first discussed this here:
https://qt-project.org/forums/viewthread/36661/

I don't think this is a big deal, since a programmer can palliate by opening the context menu so the user must work to move the pointer out of the menu. Still, the left edge of the menu is usually close to the pointer and somewhat easy to drift off the left edge.

Also, the platforms differ in how most users use menus (press, move, release on OSX or Linux, or click, move, click again on Win/OSX/Linux). So this bug is only important for a certain subset of users on OSX, those who use press, move, release.