Annotations don't show in Preview
When you annotate highlighted text in Preview, it creates a little sticky note on the right of the document which you can open to write your note or see/edit your note later. After closing my PDF on Preview, and when I opened it again, those disappeared. However, the notes appear on the sidebar and redirect me to the highlighted text when I click on it, but the sidebar only shows a preview of the note and to visualise the note or edit it, you need to be able to click on the little sticky note on the right, but I can't since it disappeared. How do I fix this?
MacBook Air 11″, macOS 11.6