Yes, Madara's Ten Tails Jinchuriki Mode is complete.
The Gedo Statue drew in all the beasts.
When a Tailed Beast is removed from its host, the host dies. To avoid this from happening, there should be enough chakra of the Tailed Beast left inside the jinchuriki. When Gyuki was being removed, he sectioned one of his tentacles, having chakra, to Bee. This was done so to ensure Bee survives without the majority of Gyuki.
Struggling against its confines, Gyūki apologised to B as it was extracted and sealed within the statue along with the other tailed beasts, but not before cutting off one of its tentacles, letting B survive through the chakra within it.
Therefore, the majority of Gyuki was absorbed into the statue and only a portion of it was intact with Bee. That portion served as a source of life for Bee and it was negligible compared to the intake of Eight Tails chakra into the statue.
Therefore, since the statue contained most of the Eight Tails chakra, Madara was able to undergo the transformation.