It's actually been pretty random for me. Tonite, for instance:
* When combining block + file + water to produce 2x rings + file, 3 times in 6 combines it swapped the last two (the second rings and the file)
* When combining rings + file + hammer + water to produce jointing + file + hammer it swapped hammer and file 4 times in 12 combines
I managed to get by with only one relog tonite by paying (mostly) close attention. The server always returns items in same order so I could use what appeared to be rings as a file in the next combine & etc.
Speculation:
I suspect that this bug was exposed in the patch previous to today's. Prior to that earlier patch I recall fine plate and cultural combines, which return the item made plus the smithy hammer, occasionally showing the hammer on my cursor on a successful combine, where normally the item made is on top and the hammer is the second returned item. I'm thinking that perhaps this was the same desync I'm seeing now, but that the server was resolving the desync by trusting the client to tell it what was being taken off the cursor when you put it into inventory (or the trade window), which would have permitted a really bad dupe hack. By (presumably) fixing the dupe hack (in the prior patch) the desync problem has been exposed with no available resolution other than zoning (logging) to force a client sync. Just speculation tho.
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