As you see in this screenshot I must hover the mouse on that that spot to click on button in overall you must hover the mouse upper than button to click on it, tried to change the Sprite but even with default Sprite I have this problem so I don't think there is problem with Sprites.
Let me explain more about this panel:
In this scene I have two canvas's one for Pause button only and another one for this panel that is disabled. When you click on Pause this panel will appear ( second canvas will be activated. Why is that? I tried to change some things in the canvas like change UI scale mode to scale with screen size but no luck.
I will be grateful for help I don't really know where problem is.
Update : I just now found very odd behavior when hit play if mouse be in game view that problem wont occur, after mouse leave the button issue will appear again.