Resolved Elements don't fit the size screen after build

Hello,

I hope i chose the right forum. I am in quite a troublesome situation. I made a build some time ago and it worked fine. After quite a lot of work and modifications of the game i made build to test it and... for some reason elements don't fit screen anymore. What is the most surprising in Unity Editor when i change resolution in game mode screen everything looks pretty good. No matter what resolution i change. However when i made a build it just does not work. Elements seems too big or they are just out of the screen. I was making in Unity for FHD res and the build was run on 1366x768 resolution.

Could anyone give me a hint why it happened? Especially since in editor everything looks good no matter what resolution i test (even tested vertical resolutions and it looked good!) but went awry after the build.