Inkscape leaving grey borders during SVG->PNG conversion

We have a system that compiles SVGs from paths, textPaths, and uploaded images (.png being one supported type).

We then convert the .svg -> .png. This process is leaving a strange grey border around images (and all transparent edges) as outlined in the image below.

Anyone have any idea how to solve this?

enter image description here

Solution

Possible lucky guess, but I know that CI has some problems alpha transparency that can cause problems with transparent images. I had similar one with resizing of transparent PNGs.

Try to set Aplha to zero (I think this was proper solution)