Right mouse click and then must two times left mouse click

Hello. I move my camera with pressed right mouse button. Then if I want click on some button with User Interface, I must click two times. One time no matter where (As if the RBM unclick)

https://sc-cdn.scaleengine.net/i/a00315a35afdc485c69888be5a7ac95f.png

Please help :slight_smile: