It made be because Obito wasn't in full control , I'm sure Obito will ask him that next chapter & we'll get our answer .
I think he meant becoming intangible, not warping. We saw Obito warp in Juubi Jin mode to deliver the 8&9 tails chakra to the Kamui dimension.
Hee took kakashi eye and hes madara.
Did anyone fail to notice that Sasuke cut Madara in half before he jumped
Did anyone fail to notice that Sasuke cut Madara in half before he jumped

Whether or not he's in half he is still the Juubi's Jinchuriki. You can tell just by looking at him. He shouldn't be able to transport, period.
Sasuke has shown some progression in the hand to hand or close combat. Even though madara isn't particularly focusing on him, it's still kind of cool to see him chase down and be a thorn in madara's side. Of course, I'm wondering who's gonna block that 10000 mph fastball from Madara in Kamui Dimension.
Well with the limited information that could be the only reason for him being able to