Moving emails to another folder hides the target folder [linux]

In Thunderbird 60.0, when moving emails, a "thumbnail" of the email lines is showing, which will hide the highlighting of the destination folder. In older version, I could easily move several emails from one folder to another and see the highlighting of the destination folder. How can I change this back to the previous way? When only moving one email, this is not a big issue (still a little one), but when moving several, it is, as I cannot know for sure at which folder I'm pointing. (Screenshot attached) I've found that, if I drag in the left side of the lines, or at the top or bottom line, I can avoid hiding the destination folder, but this is not a very convenient way of organising my emails.