Custom Viewport and moving actors arround

I have created my custom Viewport in my custom editor. Everything works fine: I can move camera, look arround, spawn actors / components. BUT I can’t click on them and move them arround. Rotation/Movement widgets is visible but when I’m moving it I’m moving my camera. I can’t select different object in the scene.

Wasn’t able to find what’s responsible for such input, anyone can point me out?

Have some progress on this but with weird problem: bandicam 2018 07 12 15 17 45 111 - YouTube know what’s going on?