When importing SVGs I often experience errors with figma. SVGs sometimes do not look the same as when opened in the browser.
For example: https://upload.wikimedia.org/wikipedia/commons/d/d5/Coat_of_arms_of_Bavaria.svg
This SVG looks like this when imported into my Figma file:
Same goes when nesting layers in Affinity Designer:
Turns into this when imported into Figma:
(not to mention it gets imported at 1x1 px size)