This post is from the WWDC26 AppKit Q&A.
We have a status item which works fine on macOS 26 and earlier, which has the following properties:
- Supports left-click to open main UI (a popover)
- Supports left-click (while open) to toggle (close) the main UI
- Supports right-click to show "app" menu (e.g. About, Quit)
- Supports a drop destination to accept files and folders, which then triggers the main UI for more interaction
In macOS 27:
- left-click seems ok if we use expanded interface session, but otherwise broken
- left-click while open no longer toggles (event is missing?)
- right click is no longer operational, to the point that it seems the Menu Bar doesn't forward the event at all. Other (Apple-provided) items work fine, and expose new context menus
- Dragging now triggers Mission Control, which seems wrong given the destination was in the Menu Bar (FB23018381).
Are these interactions now forbidden, and are there lists or documentation of the new rules?
As an additional bug, it looks like popovers don't pick up appearance changes. The child scroll view claims to be in light appearance in the View Debugger, but is clearly showing the wrong background color, this is a new (as-yet unreported) issue.
One last bug: expanded interface session seems to suppress the popover's animation when shown.
