Ex-Figma.

I'd be worried about a lawsuit here, primarily due to the overall app architecture and property panel on the right. While there are differences between your implementation and Figma's, it's close enough that things are very clearly Figma-inspired. There've been a lot of Figma copycats, and Figma does have a track record of successful lawsuits against them.

Great work with the backend architecture (a lack of a proper wasm renderer is why penpot will never be competitive), but you're in dangerous territory with the UI.

Wasn't Figma's side panel just a ripoff of Sketch's? Always felt that way.