UICursorAccessoryView：

I found that there is no access to this feature in titleBar(In the maximized hover panel, there is only a full-screen option) and menuBar(In the view submenu, there is no corresponding feature menu item, which appears to differ from the automatic addition rules for the dictation function and emoji symbols in the edit submenu.). I have found the cause of the problem. If the movable flag in NSWindow is set to NO, it will cause this feature to be unusable.

The new window resizing and placement feature of macOS Sequoia is not working in my application, and I don't know why. What's worse, I haven't consulted any relevant documents.