we are seeing that for some legitimate hyperlinks which Aspose itself asserts it is hyperlink by setting IsHyperLink to true but the HyperLinkAddress is NULL.
I am attaching the sample application which shows how the linkpath (hyperlinkaddress) is null for the hyperlinks as shown in the attached screenshot. Please add the license file and use latest one note dll, build and run.
NullLinkAddress.7z (8.9 MB)
image.png (4.5 KB)