All sort of theories. I mean blackholes attract things, you can imagine UAs getting stuck in the gravitational well.
Alternatively the blackhole may be disrupting its ability to jump to witchspace or where ever they come from, meaning they might only ever be found on their own near black holes since they're unable to jump out.
Admitted, this is purely theoretical, but in hyperspace, you might only be able to detect gravity, so black holes (with their enormous gravity) might act as beacons there. Just like our ships drop out near the largest star, the UA might drop out near the highest concentration of gravity.
As I was scrolling down I had a brilliant idea about how they might jump & end up near a black hole. This ^^ this was the idea

So similarly how we jump from star to star, they might jump from black hole to the other - they might need something BH-related (like Hawking-rad?) to "lock on", apart and over gravity though, as there are some pretty massive stars out there too.... like... you know... ANTARES...
(the below is classic, starts up pretty good, then it gets... better... shows what happens to you... your mind... out there

)
[video=youtube;X2B_HG8lkuc]https://www.youtube.com/watch?v=X2B_HG8lkuc[/video]
I went out to the Pleiades with chaff, hatch breaker limpets and a mining laser.
Stayed a while at HR 1185 B, met another CMDR who had seen some SS but without UA. I saw absolutely nothing, visited some other systems in the Pleiades, and decided to go back to the Apalar CG.
Would have liked to try to break the UAs hatches... since nobody seems to be able to confirm that that has already been tried. I guess a targeted UA would have to show subtargets on the left panel for a hatch breaker to do anything meaningful? I would expect the UA to have a lot of hatches (one for every limb).
Well, even I have a test for hatchbreakers somewhere.... let me see... yeah,
here. I swear I'm pressing the button. Nothing happens. Nothing at all, same as the various scanners - they would not even start up.
In HR 1185, Mobius, I'm hanging around in the SSS thinking about it if anyone cares to join.
Well, no kidding. (wanted to use a different word here) that's truly awesome! Congrats!
Feeling a lot less ugly-headed. Just had a mate play "Who Killed Bambi?" down the phone at me.
a) good, it's all fine mate. Stuff happens. b) That's evil!

I did laugh out loud though.
...
About the MASS test, it'd be better to bring more than just one Anaconda near the UA: one it's not enough IMO... the more mass, the better.
And now that we know the UA likes Black Holes, we know that it likes massive things, as I already theorized before all the recent news...
T9 = 2.5 x Anaconda mass-wise. Just sayin'
It does indeed! I only had to spend half an hour in system, scanning planets and there you are, a UA alone in a SSS.
I tried silent running for maybe 10 minutes, just to see if a thargoid capital ship would frameshift in, but no luck
I'll try to scan the wiki for test suggestions next.
Oh wait what? So you've found it in the system but NOT near the black hole?
With help from commander Nilreb, Sivert has found a new home with commander Zenith. And he's a brave boy, he agreed to help in any test necessary even if it costs him his life.
I'm back out in the Pleiades again, see if I can stumble across stuff.
Something interesting though: The UA did register as stolen, even though it was technically only illegal salvage. I thought it only got the stolen classifier when it came directly from another ship.
Good to hear! Although knowing Zenith, his days are numbered. The UA's, not Zenith's

Every salvage registers as stolen, that's normal. There are only 2 things that don't - stuff that you've ejected in any way, to you only - or things that were ejected by "abandon", to everyone.