How to prevent media library from changing svg-file to html?

[miettinj]

I upgraded my Mezzanine 4.2.0/ Django 1.8.19/ Python 2.7.18- based server to Mezzanine 6.0.0/ Django 3.2/ Python 3.7.

After upgrade I noticed that media library (using filebrowser-safe 1.1.1) stores the uploaded svg-files as HTML documents that cannot be embedded as part of page content any more.

I can only embed svg-files uploaded by the old server (that used filebrowser-safe 0.5.0) into my pages. Please see the output of the linux file-command in the attachment.
svgt.txt