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Yep, same here. It sucks too, because my manager is a nice guy. He's very supportive/understanding. But my god, he will tell us to not shit talk the kid (kid who is 26 years old btw) but then allows him to just screw us over daily. He came in close to 5 hours late the other day, then did a no call no show the next day- but NOPE, nothing is said.
My manager is a quiet firing guy. It's beyond frustrating. We have one kid, he screws us daily. Does what he wants. My manager has basically given up because he's too busy in his work to tell him simple things like "Grab your work phone before meeting" every morning. 
I fully agree with you, OP. I can't stand my manager lately because of his lack of a back bone. More work falls onto other employees shoulders when one keeps screwing them over. It's making my entire team to hit a boiling point of annoyance with it. Weak bosses create negative atmospheres >

That’s the worst! We got a new manager at the beginning of this year and he’s the same way. We bring our concerns to him and the behavior only gets worse because he’s more concerned with being fake nice than actually being helpful.