We have two bathrooms and both toilets bubble, but one of them decided that the toilet only flushes when it wants to, and the sink drains into the tub, and the tub doesn't want to drain. But my other bathroom is just fine other than the toilet bubbling. We have the rotorooters over and they snaked the toilet, tub and sink. And it changed for like a couple days. What is going on? I am stumpped!!

Call them back, should be free of charge. Rooting was the root to take but they apparently did not fully clear the line.

Bob nailed it! Call them back, You have a blockage downstream from the tub that your plumber just pushed it farther down the line. Hope you haven't paid them yet. Good luck, b Tom