Hi.
Original Poster, you have just come across the one 'downfall' of Sky Demon I have to date found.
The 'system' draws a circle based on Lat/Long, or in this case to encompass the CTR/CTA, which seemingly includes other, non relevant airspace.
Look closely at limits of said CTR/CTA on Sky Demon, or dare I say it, on paper chart, to see which airspace it refers to.