This is consistently reproducible in sandbox mode, I've never tried it in a real game.
Use Wrecker ult and go directly up as high as possible. You will not fall back to the ground but get stuck on an invisible floor. You're able to stand and walk around freely but not get back to the ground.
Use Wrecker ult and go directly up as high as possible. You will not fall back to the ground but get stuck on an invisible floor. You're able to stand and walk around freely but not get back to the ground.