Post process component in HUD UE 4.27

Yesterday I migrated my project from UE4.26 to UE4.27.2. I have a problem with my HUD. In my HUD I have post process component. The problem is that now this post process component doesn’t work.
Has anyone had the same problem?

Thanks a lot for the support.

can you show your post process in 4.26?
as i know in ue4 no post process on ui in any version

yes, in 4.26 I have post process component in my HUD blueprint and it works.

can show some screens?