Server Bugs

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Flying vehicle across border into damage-enabled land causes injury (often immediate death)
Locations where this happened earlier this evening: Solang / Les Cigalons (near 155, 11) Rua / Old Cave of Rua (near 70, 12) Sequence: You're flying across a sim border. The land you're about to enter in the target sim has damage enabled. "Injured" noise plays. You die and are teleported home. This has happened to me several times over the last week. This is likely related to a highly repeatable bug in which a vehicle gets nudged by a few degrees (sometimes moreso) when going over a border. If you want to see that bug, try landing at Hollywood Airport in Santa Catalina, where the runways are very close to the edge. You'll often find the nose of your aircraft pointing in a slightly different direction after you've crossed the border. There seems to be some kind of spurious collision event that takes place, even if it's an airplane and not in contact with anything at all. The phenomenon doesn't always have the same magnitude, but the hysteresis of "nudging" seems to scale inversely with aircraft mass. I have a very small aircraft (motorcycle-sized) that can be thrown off by multiple tens of degrees. Larger aircraft seem less susceptible: something the size of a Cessna 172 might get "tilted or panned" by 15 degrees or less. Corroborating evidence: The "nudging" effect is readily apparent at low speeds, when the aircraft's kinetic energy isn't much higher than that of an avatar. Go over a border at 30 meters/sec, when the aircraft's kinetic energy is many times higher than that of an avatar, and you won't see any noticeable effect. My guess would be that this is a race condition that occurs while linking the avatar to the seat on the airplane as the handoff completes: they collide with each other during the split second that elapses between bringing the avatar into the sim, and linking it to the seat. Now, does the avatar have to be non-phantom while this is occurring? Probably not. Avatar collision hull is useful on vehicles, but it's not so critical that you couldn't do without it for a moment on region handoff. As I recall, over damage land, collisions can injure avatars, and vehicles forward damage to avatars as well. So, if the avatar is colliding vigorously with the airplane for a split second due to this phenomenon, the avatar would take damage.
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Can't return encroaching objects on BlueSteel regions?
In the two BlueSteel 2024-07-22.10048683488 regions where I can test (Tenera and Eagan), I cannot return objects encroaching from land on those regions, under conditions that seem identical to successful return of objects encroaching from Second Life Server 2024-06-11.9458617693 regions. It appears that the problem depends on the encroaching object being on the BlueSteel region because I also cannot return those objects when they encroach onto parcels on a non-BlueSteel region (Crumbi), and I can return objects encroaching into BlueSteel from the non-BlueSteel region. Weird thing though: I had the same problem a week or so ago when these BlueSteel channel regions were running 2024-06-11.9458617693. So maybe it's some region-specific configuration thing, not the server software itself, perhaps only coincidentally set for these regions on this channel? Perhaps supporting that theory, as I was testing today, I noticed the region environment sun angle was quite different on these BlueSteel regions than on their neighbors, which probably isn't in the simulator code per se. ADDITIONAL INFO: Today, Wednesday August 7, after other RC channels updated to 2024-07-22.10048683488, I tested on Tussock and Foxglove (Ferrari channel) and Epirrhoe and Tuliptree (Magnum) where this did not replicate but it's still happening on Tenera and Eagan, BlueSteel regions which also restarted today. Unfortunately I don't know of any other BlueSteel regions from which I could return encroaching objects to see if it's just some weird fluke of those two.
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