When I open Roblox Studio, the toolbox’s minimum width that I can set it to is different, as I can’t make it smaller than I usually can.
This happens all of the time. When I try to resize the toolbox window to make it smaller, the width is still bigger.
The bug happens in Roblox Studio.
I am using Windows 10.
Usually, the toolbox will show three assets at a time. It shows four at a time now, and you can’t make it smaller to just show 3 at a time like you use to be.

The bug started happening today (8/16/19) for me.