Because Sketchup models polygons as "coarse" circles, the plugin treats them as circular arcs and emits a circular profile for them. This is clearly broken. Hopefully, some metadata is available to differentiate between the actual circle case, and polygons.
A workaround exists: simply select the polygon edge(s) in the layed-out SVG in the Skecthup model, and right-click "Explode Curve" This converts the "circular" path into a series of line segments, which the plugin will then correctly emit into SVG. A rough video showing this is at https://youtu.be/NItjDRbPNLI
Because Sketchup models polygons as "coarse" circles, the plugin treats them as circular arcs and emits a circular profile for them. This is clearly broken. Hopefully, some metadata is available to differentiate between the actual circle case, and polygons.
A workaround exists: simply select the polygon edge(s) in the layed-out SVG in the Skecthup model, and right-click "Explode Curve" This converts the "circular" path into a series of line segments, which the plugin will then correctly emit into SVG. A rough video showing this is at https://youtu.be/NItjDRbPNLI