MediaWiki 1.31.1
PHP 7.1.8 (apache2handler)
Echo release 1.31
CategoryWatch 2.0, 2017-09-19 (542f9a1) 16:24, 17 April 2018
LocalSettings:
wfLoadExtension( 'Echo' );
#$wgRCWatchCategoryMembership=true;
wfLoadExtension( 'CategoryWatch' );
$wgCategoryWatchNotifyEditor = true;
When I move a page into or out of a category I get nothing.