Since I have my own non-printable object here in this forum, I had a look at yours. Shared misery...
If I use the "Pause / Timeline Slider" in Z-Suite you can see that there is an area where no Infill is used.
Could be a graphics artefact, but also a hint that there is something wrong in the slicer.
I tried different resolutions and it always looked the same. No solution I know, but it looks already a little bit odd in the "preview" in ZSuite.
Mind you if there is a bug with slicing round thin objects one would think that a lot of people would have complained already.
(Here is my perfect excuse to get a Kossel Mini in addition to the Zortrax M200. :D :P)