In the attached save file you can go on my space platform called "Nauris" and you'll see this beacon near the bottom of my ship. I cannot deconstruct it no matter what I try. Here's what I've tried:
1. Setting a deconstruction plan area over it by pressing with Alt + D
2. Setting a deconstruction plan area over it by pressing the red button for it on bottom of UI
3. Deconstructing it by holding right mouse button over it
4. Deconstructing the building area around AND under it
It still properly exists as I can set modules to be used with it and when building a belt line to go over it, the underground version goes under it and pops from the other side