Post any defects you find in the released or beta versions of the ImageMagick software here. Include the ImageMagick version, OS, and any command-line required to reproduce the problem. Got a patch for a bug? Post it here.
My team has very little experience using ImageMagick, so please let me know what info I can provide to help figure this one out!
Using the .NET library - Magick.NET-Q8-AnyCPU 7.10.2 - we are converting SVGs to GIFs and get black rectangles instead of text. The only related bug I found online was related to flowed text, which we do not use.
ImageMagick can use one of 3 renderers for SVG: its own MSVG/XML, RSVG delegate and Inkscape in order of increasing best results. The default is MSVG/XML. So if you have not installed RSVG or Inkscape, you will likely be using MSVG. Try installing Inkscape on your system. ImageMagick will use that if it finds it.