Created attachment 30132 [details]
text annotation without appearance.
According to PDF spec. 12.5.5, there should be a default Appearance to display when no appearance stream are supplied.
poppler don't display anything when not appearance found. The attached pdf file has a text annotation without a Appearnace (AP) at the lower half of the first page. In Acrobat Reader, it shows a white sticky note and popup a window to show its contents when clicked. In evince, no trace of the text annotation can be spotted.
see also: https://bugzilla.gnome.org/show_bug.cgi?id=168304#c17
Also according to "18.104.22.168 Text Annotations", The /Name entry of Text Annotation should has some predefined icons to use and the "Note" is the default name:
Key Type Value
Name name (Optional) The name of an icon that shall be used in displaying
the annotation. Conforming readers shall provide predefined icon
appearances for at least the following standard names:
Comment, Key, Note, Help, NewParagraph, Paragraph, Insert
Additional names may be supported as well. Default value: Note.
The annotation dictionary's AP entry, if present, shall take
precedence over the Name entry; see Table 168 and 12.5.5,
Thanks for the bug report, this is a duplicate of bug #23108
*** This bug has been marked as a duplicate of bug 23108 ***