Custom context menus do not clear messages from QStatusBar

When a custom context menu is shown and that menu contains actions with statusTips, the messages are correctly displayed on the QStatusBar.

However, upon close (or focus out) of the context menu, the messages remain in the QStausBar.

The messages should be automatically removed when the context menu closes. The correct behavior is exhibited by menus in a QMenuBar.

This behavior can be seen in the example:
examples\mainwindows\menus