D.va nano glitch

I noticed in a few of my comp support games that my nano disappears from d.va when she gets in her mech. Is this supposed to be intentional? It only happens when she is goes from baby d.va to mech d.va.

This is a feature, they are treated as 2 different heros so when nano baby dva when shes mid remech she will lose it once she enters the mech successfully. Same goes for echo duplicating, if echo is nanoed she loses it when she duplicates.