It seems to me that setting the thumbnailData and thumbnailURL attributes on the CSSearchableItemAttributeSet has no function in macOS. The Spotlight interface will only ever show the application icon in search results.
Is this the expected behaviour? Is setting this attribute useful in any way?
Seeing the same thing here on macOS 12 (even with recent Xcode betas). The thumbnail seems to be completely ignored.
However, running the same application on macOS 13 beta (compiled with Xcode 14 beta 6) the custom thumbnail is appearing as expected (well, I've only tested for thumbnailData).
Annoying as hell. So much wasted time.
