"Mouse over" not working on 2 overlapping objects

[thunder]

I have a square that changes to red color when my mouse is over it, or else it stays green. It works fine alone but if I have another object behind of it(like a circle), it stops working on the part where it intersects with the other object. Both objects have box collider 2d. Any helps? Thank you very much.

https://filebin.net/5tcfjaufkbq9le0x

[djaydino]

Mouse over works as 3d

if you change the z position it should work.

[thunder]

Yeah it worked, thank you.