I can highlight the entire text within an href value box in the attributes pane, but I cannot hit the delete button to remove it. When I do so, it moves to focus within the href tag box to the left and if I try it again it will sometimes delete the "f" in the "href" tag instead. I can backspace though, and I can use delete within the URL box in the Options pane.
Thank you for the report, Jo! Can you try whether this happens in the latest update?
We were able to reproduce the problem and issue a fix in 5.0.2 which was just released.
Sorry, missed this reply, but yes it was after the update that I posted (forgot to say that too sorry). Thanks for a quick fix, will check it out shortly then. :)