Currently OpenLiteSpeed reads .htaccess on starting time, so, if some new .htaccess files are created, or current ones modified - changes are not in effect until the reload of OpenLiteSpeed service.
OPENLitePanel provides customers an ability to reload OpenLiteSpeed directly from the user level, and does this automatically for the .htaccess files edited. It's also reloaded automatically when uploaded using FTP.
Enjoy OLP :-)