Earth main start off the round without any status effect on him. Earth main initiate a chase combo with his mystery. Mei's chase, as part of the combo chain inflicted immobilize. This immobilize is reflected by opposing Pain-Ningendo onto earth main. Earth main continue to perform his chase attack and summon chase attack despite being immobilized. After the chase attacks conclude, earth main is no longer able to move, and could not use his standard attack.
Is this interaction working as intended? This incident happened during space time today.
To be clear, the earth main was immobilized by status reflection during the chase chain, but the immobilize effect did not take place until after the chase chain is over.