Pikefish

Found it! HQM quarry shows the same output quantity as I just collected from it before the restart (in hindsight I think Stone does match up too, some stacks have merged though). When I accessed the fuel container it showed the fuel I'd started with (I think, fuel stacks have merged too) and the HQM began to tick up again. Essentially I've duped my mats, the opposite of the flushing them away I did on the first few days! The quarry system wasn't synced tightly enough with what I did in the final minute, causing it to be in my inventory but also restored to the quarry, this might be tricky to prevent exploitation.

So it's probably just me seeing this right now because of when I emptied, I gotta go for the night but have a screenshot that it wouldn't let me add for some unknown reason if you wanna see the numbers later.

Other possibilities, giving me again all that I've every taken from / fed to it, or showing me someone else's instance.
The Metal and Stone megastacks are static and two more stacks are accumulating beside them as the fuel megastack ticks down. There's about 17k Metal and 115k Stone, a comparable amount to how much I think I've gotten from here to date.

Sulfur quarry the same as Stone. Functioning! Output inventory 6 slots and called fuel storage, I'm fairly sure I saw a larger output inventory yesterday at least on the stone quarry, I pulled more than 6 stack out, but who can trust memory.

Much of what you're seeing, OP, is intentional function of the new quarries, but some not. I'm seeing the same from HQM quarry right now on US Scourge. Others report it to be functional but I watched 50 fuel melt in it. The output side has the label of "Fuel Storage" like the fuel storage side does. I'm not certain whether it always did and couldn't get people saying it worked to confirm what they saw there, going to check out other quarries and see if I can see a difference.

Lost a ton last night too, sleeping before the message came about don't. Could perhaps the virtual containers empty into their owners inventories on closing rather than just wiping? Presume it takes a reboot without that functionality to implement that, but if it can be done it would be a good fail safe for the likely further reboots that will be required.

Update: Stone quarry is functioning for me, fuel storage is the name of the output and it's 6 slots wide too. Went back to HQM and its still eating fuel, Spooky Poo reports same result from HQ.

Did those resources not return to where they were 10 minutes prior? My Quarry and PJ still had their outputs intact, but my PJ was observed out of fuel shortly after crash, I thought I had some in it but not certain.

Same occurs with triangle hatches.

Just learned that TK lost some incendiary rockets at the same time that I briefly saw them, perhaps either they were made available to a lot of people and someone took them, or they disappeared into the void when they got shown to me.

Have concluded the recycler is either mixing up people's loot, or garbling the indexes of items. I opened it now and in the INPUT contained 760 scrap, which promptly disappeared, then 5 incendiary rockets which quickly did the same. Then I correctly managed to recycle a guitar.

Probably relevant, my ping is always around 250 because the Pacific is big. The go button is sometimes red when it's off and green when it's on, probably desynch from opening and closing it before a message can make the round trip and the client is no longer listening.