Hi, Drix.
Is it possible for you to share with us the content that you attempted to copy into a journal entry? If it contains personal information, please feel free to describe any non-letter or digit characters you used. It is unlikely that fonts caused this issue, but just in case, do you recall what fonts you were using?
You are correct that our journal entry editor is currently unable to track links. We are considering what improvements should be made to this editor in future releases and we will take your comment into consideration.
Sorry for the issue with the validation error - hopefully you still have access to the information you tried entering and we can then fix the problem for future releases.
Thank you,
Support Team