SVG sanitizing — uploading, previewing and downloading SVG images results in a black box
When uploading an SVG to a project the preview displays a black box (see: https://gitlab.com/gitlab-com/gitlab-artwork/blob/master/wordmark/stacked_wm.svg).
Downloading and opening that image also shows a black box with the actual logo or image asset underneath — all color from the original SVG is gone.
cc @DouweM @stanhu