Someone noticed there was a camera feed on the mission control wall that shows the Center Core's drone ship, after the smoke clears no ship can be seen: https://twitter.com/Darkphibre/status/960990105581240321 9:00 into the feed, it's likely the core either missed or failed to land properly. Although the screen is partially out of view.
What I don't understand why they think they need to lie in the first place. Just cut the damn feed and say "the control cut the feed". All these cutesy giggles, Oh's and Ah's, "we are hoping to get it back soon" when the commenters are clearly looking at the live feed themselves [1]... this is just wrong.
[1] https://youtu.be/wbSwFU6tY1c?t=2326 - see the timing of them saying "Oh" and the smoke clearing off the drone ship.