Application Menus and NSPopUpButtons don't stay open anymore after releasing mouse button

[buzzdeee]

after upgrading to gnustep-gui 0.32.0 I observed that:

When clicking/opening menus, they close immediately when I release the mouse button.
This is true for Application Menus, as well as NSPopUpButtons, which wasn't the case before.
Downgrading to prior release, when I click a menu item in the Application menu,
or an NSPopUpButton then it stays visible, even I release and only goes away, when I click something in the menu.

In case it matters, I use NSMenuInterfaceStyle NSMacintoshInterfaceStyle.
The Noteworthy changes for gnustep-gui-0.32.0 mention a number of NSMenu related changes...
Is that maybe even expected?