User blog comment:DaNASCAT/Technical Update: September 18, 2017/@comment-30963302-20170919222144/@comment-2200849-20170919222939

The tabber seems to work fine with custom JS disabled: http://gup.wikia.com/wiki/M4_Sherman?usesitejs=0

Please check your local script customizations to ensure they do not conflict with the updated extension.