SVG not rendering
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Describe the bug
If I drag and drop this svg: https://upload.wikimedia.org/wikipedia/commons/3/33/Map_Macedonia_336_BC-en.svg into a diagram I get a blank box.
To Reproduce see above
Expected behavior should see the svg
draw.io version (In the Help->About menu of the draw.io editor):
- draw.io version 16.1.2
Desktop (please complete the following information):
- OS: MacOS 10.15.6
Does it work on app.diagrams.net?
Nope, same result:

SVG drag&drop fails also in 16.5.1 (Win 10) but File > Import is working.
Is File > Import > svg working at your place?
Yes that works, but looks like it imports as a low-res bitmap. The text is pretty badly pixelated and hard to read.
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The SVG example fails any validation tester I put it through. If I run it through an SVG cleaner like https://svg.enshrined.co.uk/ it then works. Conclusion - not a valid SVG image.