MySQL: records, inserted via phpMyAdmin, do not replicate
I do not use phpMyAdmin so maybe i'm out but take a look on a potential autocommit option in the UI... Maybe your PMA's session isn't in autocommit (test with : SHOW VARIABLES LIKE  "autocommit"). 

Other thing, do you have filtered replication ? (do-replicate, do-ignore...)

Max. 

Best regards.