Vertical scroll bar missing

The vertical scroll bar on for Junk E-mail is gone.  All other mail boxes (Inbox, Sent, etc.) show the vertical scroll bar.  Apparently, this just happened.  Anyone know why this may have happened?

Does restarting eM Client change anything?

Does the mouse wheel still work for scrolling in Junk?

Tried those things yesterday, but, interestingly, when I started eM Client this morning, the vertical bar was back.  Go figure!

Thanks for replying.