I think there was a 1px error in your sprite image.
I trimmed off the outer borders and cut away the top half, no longer a sprite.
Using that image I get consistent results with FF and Chrome. Dragging it out of place by -1px -1px intentionally.
When I set bg-position to 0 0, it is the same in both too. You will get rounding errors in both browsers when you zoom in/out. Chrome may have been getting a rounding error on page load with the original image.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Test Page</title>
<style>
.wraph {
position: relative;
width: 606px;
height: 606px;
margin-top: 45px;
border-radius: 25px;
border: 3px solid red;
box-sizing: border-box;
background: url("test.png") no-repeat -1px -1px;
}
</style>
</head>
<body>
<div class="wraph"></div>
</body>
</html>