Subresource Integrity warning for scripts with data-uri

[exyi]

I get this warning: "Subresource Integrity (SRI) not implemented, and external scripts are loaded over HTTP or use protocol-relative URLs via src="//...", even though the only script on my page is:

<script src="data:text/javascript;base64,YWxlcnQoMSkK" type=text/javascript></script>

This is the website I tested it on: https://observatory.mozilla.org/analyze/exyi.cz

I don't want to stop using the base64 inline scripts - it allows them to have defer attribute and provides less opportunities for exploitation JSON encoded data in the script by injecting </script> in a string