Canvas behaves differently on PC fullscreen and WebGL fullscreen


I’m making breakout/arkanoid clone and my game is displayed incorrectly on WebGL fullscreen mode.

On PC fullscreen and WebGL not in fullscreen mode canvas seems to completely overlap blue background, and my texts are placed on the corners of the game area which is what I want.

On WebGL fullscreen however it expands to the borders on the sides of the screen. My texts are now outside of play area.
I tried changing parameters in player and canvas settings but it doesn’t seem to do anything. Screenshots of settings are on Imgur: The magic of the Internet

How can I make the game on fullscreen WebGL to look the same way as the PC version?

I’m using unity 5.5.0f3.

I have the same issue, did you ever find a solution?

Anyone else able to help?,Damn, me too. You ever get the answer here? Seems like it would happen a lot, maybe already asked and answered?