Hi Dmitry,
I have looked into the node changes and there have been further alterations since my last post, making it invalid.
Lets approach this from another angle and see if it works better, because we are doing a “hacky” work around using Blueprint nodes.
Could you try creating a PlayerCamera Blueprint, then set the min and max rotation values in it’s defaults. Open your MyController Blueprint and in it’s defaults under Player Controller, set the Player Camera Class to the PlayerCamera you created earlier. Then PIE and see if that is a simpler fix for what you are trying to accomplish.
Let me know if this works for you.
Cheers!