What the what? Parts colliding with launch pad while in ORBIT....

[tg626]

I'm going about my orbital business when POOF a grey cloud spreads out from my craft...  HUH?!

Hit's F3

Big-S Wing Strake Colllided with launch pad.

 

This a known thing?  Modded install 1.0.5

[Brofessional]

I'm pretty sure this is a known bug.

[Hary R]

I thought it was fixed in 1.0.5 or may be i'm wrong, Anyway, Yes it is a known bug.

[SpacedCowboy]

Yeah, well,,, here's your t-shirt.

[nosirrbro]

That... Is quite strange xD

[Jeanjvs]

Something like that happened to me when i was about to land a SSTO in 1.02

I wasn't using Hyperedit at the time and i don't think Kerbal Engineer does that. It became nearly uncontrollable, but I somehow got it to the runway. Then this happened:

[Snarfster]

Had the same yesterday, lost both wings on my shuttle. Unfortunately it's a known item which is sort of hard to reproduce.

[klgraham1013]

6 hours ago, Hary R said:

I thought it was fixed in 1.0.5 or may be i'm wrong, Anyway, Yes it is a known bug.

Apparently, it's to hard to reproduce.  It's been around for ever.

[Red Iron Crown]

17 minutes ago, klgraham1013 said:

Apparently, it's to hard to reproduce.  It's been around for ever.

This, it predates 1.0 at least. I've been struck by it, too, but repro steps are very hard to come by, even loading a quicksave from before it happens sometimes doesn't trigger it again.

[Hary R]

Yhea i've got it to back before 1.0. it exploded my SSTO's left wings.

[Majorjim!]

The first time I left an SSTO in orbit for any length of time this happened.. You have to leave the SSTO/winged craft in orbit for a while, it will most likely happen then.

 I don't think I have ever heard Squad say anything about this very old and game breaking bug. Perhaps now the game is released it is a good time to fix the game.

[Norpo]

Problem is; without being able to reproduce it reliably; it's very hard to track down the bug; while the bug IS very bad (randomly destroying crafts is usually considered "bad") it's likely very hard to fix.

That said, I'd imagine the issue has something to do with the fact that KSP recenters the origin on the craft position (in other words, resetting the craft position in the world space to 0,0,0, and moving everything else entirely), and the buildings for one short moment overlapping the craft. I can't know for sure, though, that's just a guess. Still; that's the first time I've seen it happen in orbit (usually it happens on approach with the runway, with a plane going fast), so it seems to happen less frequently the further you go from Kerbin. That could be a clue. Also, the KSC is visible from orbit, so yes, it is being rendered while in orbit, which means the "crashing into the KSC in orbit" bug is very likely the same bug as "crashing into the KSC on runway approach" bug.

</speculation>

[moogoob]

This must be what caused my (otherwise successful) prototype Cargobird to lose its vertical stabilizers in LKO yesterday. It was OK, I got to field a rescue mission but suddenly losing bits of wing parts is disconcerting.

[xiej]

I only get this when I use BetterTimeWarp..

[Whizzkid]

Just a guess, but was KSP close to its 3.5 GB memory limit at the time? If so, i think that being close to the limit occasionally makes colliders go weird. 

[NathanKell]

If I knew what caused it, it would indeed have been fixed in 1.0.5.

 

A note on reproducing bugs, because there might be some confusion. The point of good reproduction steps is not at all something like "prove to me it's real", it's the following. I need to be able to reliably reproduce the issue in the Unity Editor, so I can more easily find what's going wrong, and then I need to be able to maintain the same repro steps to verify the fix worked.