You're getting a ..:14 because Chrome is looking for the SASS files but is unable to, due to the lack of media query in the CSS file.
Here's a prefix example your css should output:
@media -sass-debug-info{filename{font-family:file\:\/\/\/Users\/kai\/Play\/live\/screen\.scss}line{font-family:\0000311}}
.box {
..
}
Hope this helps other understand why this occurs! :)
config.sass.compress = false
Clear you cached assets, restart your server and reload the page. That should hopefully fix it for you.