Cinemachine lookahead ignore y not working

I‘ve set up a 2D platformer scene with a player and a cinemachine camera to follow. I use lookahead with ignore Y because I don‘t want jumping to affect the camera position. The problem is that when the player stands still and jumps, the camera moves back to the player.

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@oboy_gamer This may just be a problem within Cinemachine, try setting the dead zone for the y axis above the players jump height