Thank you for the kind offer. 
I tend to drag the message into logseq rather than copying it.
The problematic part of an item looks something like this:
imap-message://gyro.xxx%40gmail.com@imap.gmail.com/INBOX#191824.
I suppose that wrapping in backticks would be best, but that is not difficult to do by hand.
I just wish that native logseq would handle this issue better.