It may not be unique to Bookends as I have noticed it in Devonthink's iOS app too. However, I downloaded the PDF Viewer App and I cannot replicate this problem (and fyi for ppl that have the same markup glitch and come across this post, PSPDFkit makes the PDF Viewer App which powers all pdf annotation functionalities that I'm guessing Bookends and Devonthink outsources - along with many other apps and softwares across the board). So since it doesn't seem to be a PSPDFkit native problem, however, it is common across two different apps powered by the same software company, I'm not sure where the issue would be and thought to let you guys know.
It's not too too much of an issue, as I moved to using the text highlight function instead (which may be better in the long run once you guys implement turning highlighted text quotes to notecards for later reference -- about which an earlier forum post was made). However, actually the whole reason I found out about Bookends and moved away from Mendeley and/or just printing my papers, was because I'm a huge writer. I like to write notes & ideas while I'm reading. The other functions of Bookends got me to stay (plus doing more research about Mendeley being owned by Elsevier), but it would be nice if the original feature that brought me to Bookends was, say on par with Notability (which if Bookends & Devonthink got on par with their markup UI, I'd ditch Notability in a heartbeat, even if I've been using them for lectures and readings since my first year of college though grad & med school). /soapbox lol
Here is a forum link on Devonthink where the OP noticed the same glitch -- the OP has a screen shot in the second to last post from Apr 2.
https://discourse.devontechnologies.com ... ncil/46078
Here are my images:
This is in the Bookends app:


This is in Devonthink:

This is PDF Viewer:
