Anchor placement breaks hyperlink on PDF export

Just a bug notice: 

Background: I have manual endnote links in the copy to the endnotes, and links back to the copy. The anchors in the copy are labled "en001"… and the anchors in the endnotes labled "fn001"… The document has 276 endnotes.

In my Endnotes, If I place my Anchor at the head of a paragraph (No Character Style, nor inside the hyperlink back to the copy, but DIRECTLY before a hyperlink back to the copy AND Character Style), the anchor doesn't export to the PDF, hence the hyperlink to that anchor is broken.

If I place my Anchor inside the Paragraph (this case, afte the hyperlink back and after the Character style) the endnote Anchor is exported and all is well. 

-or-

If I add a Normal space after the Anchor, it works as well.

Previous export to PDF showed SOME "fn001"… anchors, then I updated to latest IND 19.4 and now none of those work (except the 2 I moved.)

In the attached images, endnote #40 and #41 works fine, but #42 doesn't. Other image is from the PDF document showing that only 3 "fn0…" anchors appear in the PDF document (only the 3 that I moved over in testing.)

Thanks for looking.