When I’m trying to copy highlighted segments of a PDF from the Documents/Annotations sidebar, I find that when an annotation is added via the ‘details’ pane, only the annotation/detail is copied, not the highlighted text as well.
When a note/annotation is added via the toolbar and resulting popup, the app works as expected: both highlighted text and note/annotation are copied successfully.
Perhaps this functionality is intended. There appear to be differences between the ways the two notes/annotaions appear in both the inspector pane and in the popup windows.