I don’t use annotations as such so as an experiment, I followed the advice in the thread: Annotation how to create DT3. And might have found a bug?
Using a pdf, ocr, I highlighted some text and sure enough it appears in Document Inspector Annotations. To highlight the text, the mouse cursor is shaped like (how can I describe it) a vertical line with convex base and concave top.
On the Annotation in Inspector, the cursor changes to an arrow. Clicking on the Annotation in Inspector takes the cursor to the content in the pdf. Once off the Annotation in Inspector, as the mouse travels over the pdf to the highlighted content the cursor changes to a cross. Then, when I hold the cursor over the highlighted content, the cursor changes to a thumb as expected.
However, when I move the cursor off the highlightd text, it becomes a cross, not a vertical line with convex/concave (as I described above). Which means I am unable to highlight any new content in the pdf.
The only way I’ve found for making the cursor a vertical line again is to quit the pdf then click a different pdf (or item) then click on the first pdf, whereupon the default cursor is the line again.
When on the pdf the cursor starts off as a vertical line, holding the cursor over any unhighlighted content on the pdf the cursor is the vertical line, as expected. Moving the cursor and holding over (not clicking) the Annotation in Inspector the cursor changes to the arrow, as expected. Then returning to the pdf and doing the same over the highlighted content on the pdf the cursor changes to the thumb then holding and clicking the cursor on the unhighlighted text on the pdf the cursor changes to the vertical line, all as expected.
I have found too that when I create a highlight on the pdf and then hold the cursor over the highlight the cursor changes to the thumb (as expected) but - provided I do not then click it in Annotations in Inspector - the cursor changes to the vertical line when I hold the cursor over any unlighted area of the pdf.
In short, it is after clicking on the Annotation in Inspector and being taken to the pdf that the cursor when held over the unhighlighted area of the pdf does not behave as expected and end up as a vertical line.