Unity UI: Buttons rarely reacts

Hi!

I have a problem with buttons. Clicking the button can work only after some time. It works for the first time, sometimes for the fifth time, and sometimes for the twentieth. When it work, it’s work properly, for example load new level.

I don’t now how repair it. It should works any time i click it :frowning:

Unity version: 2018.2.8f1

@eses I’m talking about “new” UI system. The buttons “work” same in editor and in build. I didn’t change input system.