We are seeing some strange behaviors when adding e_Text type annotations to PDFs, using the latest stable nightly build of PDFNetC:
When the PDF is zoomed in/zoomed out the size/appearence of the Sticky Note (Text) icons does not change. This seems to be different from the current official release.
Changing e_no_zoom flag doesn’t seem to have any effect.
PDFNet SDK now handles the no_zoom and no_rotate flags, same as other popular PDF SDK’s do.
Normally this is controlled by a per annotation flag, but Text (Sticky Note) annotations, according to the PDF standard, are always no_zoom and no_rotate.
So what you described is the desired/correct behaviour.
Note that on some platforms you can adjust the size of the no_zoom annotations using PDFViewCtrl SetDevicePixelDensity method.