My plugin GUI opens a PopupMenu to display various choices when clicking on some of its controls. This works for all occasions so far, except when opening the plugin as a VST3 offline processor on an audio fragment in Cubase.
In this scenario the menu opens and an item can be selected - but the modal menu doesn’t close on mouse click. [Enter] seems to work somehow, although it does not always return the right selection!?
(The enter issue is a general issue, which in other occasions was not observed so far because mouse clicks are usually used to confirm the selection.)