Lightroom :: Expanding Side Panels - Not Working?

When I place my mouse over the the left edge of the right side panel I get <---> which is good then I try to drag to make the panel wider and it does not work. I can shrink the panel but not expand it.
 
In any module this is how it works. I also tried using the alt key (PC) to drag it wider but no go. You should be able to use just the <--> to expand.
 
I know in other versions of LR I could make the panel very wide but no longer, it only goes wide to a certain point that won't go any further cutting off the last few remaing characters on the far right side of the panel.