> a simple hand-crafted SVG

I have also had trouble with some generated SVGs, for example:

https://gitlab.com/inkscape/inkscape/-/issues/5317

Part of the problem is that Inkscape is too good, and the file format it uses mostly conforms to standards, so I have the expectation that opening arbitrary SVGs would just work. With other programs that use proprietary formats, I wouldn't have tried to generate drawings at all. It's a bummer when I run into what seem to be corner cases of Inkscape's SVG handling, but fortunately the set of corner cases seem to be shrinking.