Good evening XWiki people,
I have noticed a problem with CSS minification and the use of SVG background images.
If the minification is turned on, the spaces are removed from the SVG data. When turned off the problem disappears.
Without minification
background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='4 4 16 16'%3E%3Cpath d='M19 3H5c-1.11 0-2 .9-2 2v14c0 1.1.89 2 2 2h14c1.11 0 2-.9 2-2V5c0-1.1-.89-2-2-2zm-9 14l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z' fill='%2344aa11' /%3E%3C/svg%3E");
With minification
background-image: url("data:image/svg+xml,%3Csvgxmlns='http://www.w3.org/2000/svg'viewBox='441616'%3E%3Cpathd='M193H5c-1.110-2.9-22v14c01.1.89222h14c1.1102-.92-2V5c0-1.1-.89-2-2-2zm-914l-5-51.41-1.41L1014.17l7.59-7.59L198l-99z'fill='%2344aa11'/%3E%3C/svg%3E");
My current XWiki version is 16.4.0 ( 
)
Many thanks