I do not know, if this is a deliberate design choice, or an oversight.
Detected exploration sites have their signature in a different spot than naturally spawning exploration sites. I’d assume that’s a deliberate design, if not for the fact that upon warping in, you land off the signature (where signature would be in a natural site).
The problem is, that if you are not the first person to warp to the site, you will land at 0 on the signature, that (in some cases) is inside a large collidable object, making you bump heavily.
This feels more like a bug than a deliberate design choice.
tl;dr Equinox Upgrade exploration sigs seem badly placed