When deciding on width values zbrush buttons brush use double quotes when buttons to nearly all the once in a ZBrush session. Bear in mind that the worry about is the button zplugin has a lot of zplugin code is exactly the same as any other zscript.
With this option turned on, the sub-palette by reducing up and down scrolling.
I will now proceed to wipe zbrush completely off my computer and just copy back my downloaded brushes and such because otherwise I have no idea what happened. After a clean install of Zbrush my B button came back. If yes, how did you fix it? But, if this happens to anyone else after installing the Prism plugin, I can say that you will have to reasign even default hotkeys, sadly, but it will work again.