UMG ordering is broken

I created new empty project and copied all my content in this new project (for solving some errors)
And now UMG ordering is broken.

Example: I have “VIP Gui” widget on top. It’s ok, but “close button” (X) in upper right corner is rendering incorrectly. It must be on top of window, but it’s not.

Next - I have widget “Perk menu” - in bottom of “VIP Gui”. But it’s not rendering in bottom! “Perk menu” is rendering BETWEEN progress bar in “VIP gui” and window in “VIP gui”.

And yes, I checked every single “z order” parameter in every UMG element. Every “z order” is 0.

Defaul UMG elements works great - simple buttons, images, etc. But custom uset widgets have this bug.