Why not just make the scrolling panel a little wider and it will correct things retrospectively.
PS; I was on another site a while back and they had a thread scroller like this site that on desktops popped out into another window. That grabbed me as being very useful, I have no idea how they did it! But I suppose it has it's own set-backs as well, phones, disability access, etc., etc.. If I find it I'll post a link, it was probably Codepen or linked from a site like Codeacademy or Sourceforge.
PS; I was on another site a while back and they had a thread scroller like this site that on desktops popped out into another window. That grabbed me as being very useful, I have no idea how they did it! But I suppose it has it's own set-backs as well, phones, disability access, etc., etc.. If I find it I'll post a link, it was probably Codepen or linked from a site like Codeacademy or Sourceforge.
"Ruck, ruck, ruck, ruck ....... Ruck, ruck, ruck, ruck"