Why aren't my circles round?

[derForcher]

Hi!

Please can anyone tell me, why Luban can’t make circles from my svg?

This is the import in Luban from my svg-file:

when I create a tool path, the preview looks like this:

Is there a setting to round this circles?
Here is the svg I use - I draw this board in Fusion360 and export a sketch with Shaper Utilities to svg:

Thanks in advance

derForcher
Ps: Luban 4.0.3 on Mac - but got the same on Windows

[derForcher]

It seems like Shaper Utilities export in a low resolution (which is weird, because this are paths) but after opening it in Affinity Designer and Saving it as an svg with a resolution of 400dpi, the circles are now round.