With the launch of 6.1.2a I've tested the bug again and it seems that is still in the air. Anyway I've found out something more: the deformation is different depending of the type body of the female character.
Female characters with body types 1 and 2 suffers the full deformation in the cutscene and when they scan objects.
Female characters with body type 3 suffer a lesser version of the deformation in the cutscene (only their neck gets a bit longer), but they don't suffer any deformation when scanning objects.
Female characters with body type 4 don't get deformed during the cutscene, but instead of helping Corso get up, they stay on the spot doing nothing, and Corso gets up holding the air. Still, they get the full deformation when scanning objects.
Here is a video showing the bug in all body types: