http://support.advancedcustomfields.com/forums/topic/screen-options-must-be-checked-bug-or-feature/
troymcginnis
March 8, 2015 at 5:10 pm
Hello,
in my case i add custom style in Function.php
Maybe quick way and undestructive method ?
#categorydiv{ display: block !important;}
That seems to solve problem for me