XF\Pub\Controller::setupConnectedRegistration calls XF\Service\User\Registration::applyAvatarFromUrl which in turn calls XF\Service\Avatar::updateAvatar which finally calls its own writeIpLog method. It seems like at this point in time XF::visitor()->user_id is still 0 which causes entries in xf_ip with action = avatar_update and user_id = 0. This log entry is wrong and probably unnecessary because later on another entry with...Read more
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