Highlighting PDFs, missing character

Marking text with the Highlighter in DEVONthink To Go.
Go to macOS and open same PDF (after sync!) and run Tools → Summarize Highlights.
Open the Summary file.
First letter of every highlighted block is missing.

Marking PDF in DEVONthink on the Mac and running Summarize works OK.

Could you send an example highlighted on iOS to cgrunenberg - at - devon-technologies.com? Thank you.