I personally have had terrible experiences with Rive support with curves.
Rive Editor:
Defold Editor:
Is there any chance there could be support for SVG or other vector formats? I personally don’t really like Rive that much and my internet isn’t the best for web-based apps like that. I know how to use illustrator. I don’t think Rive support should be scrapped but there should be more options than proprietary software like Tive.