test-min.css

.broken{background-size:100%;background-image:-webkit-gradient(linear,0 50%,100% 50%,color-stop(0%,#000),color-stop(100%,#fff));background-image:-webkit-linear-gradient(left,#000,#fff);background-image:-moz-linear-gradient(left,#000,#fff);background-image:-o-linear-gradient(left,#000,#fff);background-image:linear-gradient(left,#000,#fff)}
.working{background:url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4gPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGRlZnM+PGxpbmVhckdyYWRpZW50IGlkPSJncmFkIiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgeDE9IjAlIiB5MT0iNTAlIiB4Mj0iMTAwJSIgeTI9IjUwJSI+PHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iIzAwMDAwMCIvPjxzdG9wIG9mZnNldD0iMTAwJSIgc3RvcC1jb2xvcj0iI2ZmZmZmZiIvPjwvbGluZWFyR3JhZGllbnQ+PC9kZWZzPjxyZWN0IHg9IjAiIHk9IjAiIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JhZCkiIC8+PC9zdmc+IA==);background:-webkit-gradient(linear,0 50%,100% 50%,color-stop(0%,#000),color-stop(100%,#fff));background:-webkit-linear-gradient(left,#000,#fff);background:-moz-linear-gradient(left,#000,#fff);background:-o-linear-gradient(left,#000,#fff);background:linear-gradient(left,#000,#fff)}

test.css

/* line 7, ../../../../src/sass/test/test.scss */
.broken {
  background-image: url('data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4gPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGRlZnM+PGxpbmVhckdyYWRpZW50IGlkPSJncmFkIiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgeDE9IjAlIiB5MT0iNTAlIiB4Mj0iMTAwJSIgeTI9IjUwJSI+PHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iIzAwMDAwMCIvPjxzdG9wIG9mZnNldD0iMTAwJSIgc3RvcC1jb2xvcj0iI2ZmZmZmZiIvPjwvbGluZWFyR3JhZGllbnQ+PC9kZWZzPjxyZWN0IHg9IjAiIHk9IjAiIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JhZCkiIC8+PC9zdmc+IA==');
  background-size: 100%;
  background-image: -webkit-gradient(linear, 0% 50%, 100% 50%, color-stop(0%, #000000), color-stop(100%, #ffffff));
  background-image: -webkit-linear-gradient(left, #000000, #ffffff);
  background-image: -moz-linear-gradient(left, #000000, #ffffff);
  background-image: -o-linear-gradient(left, #000000, #ffffff);
  background-image: linear-gradient(left, #000000, #ffffff);
}

/* line 12, ../../../../src/sass/test/test.scss */
.working {
  background: url('data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4gPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGRlZnM+PGxpbmVhckdyYWRpZW50IGlkPSJncmFkIiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgeDE9IjAlIiB5MT0iNTAlIiB4Mj0iMTAwJSIgeTI9IjUwJSI+PHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iIzAwMDAwMCIvPjxzdG9wIG9mZnNldD0iMTAwJSIgc3RvcC1jb2xvcj0iI2ZmZmZmZiIvPjwvbGluZWFyR3JhZGllbnQ+PC9kZWZzPjxyZWN0IHg9IjAiIHk9IjAiIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JhZCkiIC8+PC9zdmc+IA==');
  background: -webkit-gradient(linear, 0% 50%, 100% 50%, color-stop(0%, #000000), color-stop(100%, #ffffff));
  background: -webkit-linear-gradient(left, #000000, #ffffff);
  background: -moz-linear-gradient(left, #000000, #ffffff);
  background: -o-linear-gradient(left, #000000, #ffffff);
  background: linear-gradient(left, #000000, #ffffff);
}

test.scss

@import "compass";
$legacy-support-for-ie6: false;
$legacy-support-for-ie7: false;
$experimental-support-for-svg: true;

// Removes SVG background-image statement
.broken {
	@include background-image(linear-gradient(left, #000, #fff));
}

// Works as intended
.working {
	@include background(linear-gradient(left, #000, #fff));
}

Can I see CSS instead of SCSS?

Sorry, updated^