I also experienced this today; I disabled all my addons, re-entered, and showed 3/3. Then I re-enabled all my addons, re-entered, and showed 2/3 (the original bug).
So it's one of my addons, but I didn't have time to figure out which one. (Or a LUA function that the addon relies upon)
So after a couple days of dealing with this, it appears that the bug doesn't happen as long as I'm not researching a jewelry trait. If I start a new jewelry trait, the next time I log on to that character, it comes back. The timer still counts down and the "missing research" finishes as usual but it just randomly doesn't display one of the active items in the workbenches. I could see how this would be really annoying if I hadn't been keeping track of everything on an app.
Pyr0xyrecuprotite wrote: »Update: I have not seen this bug in the last few days. I suspect that one of the recent server reboots fixed it somehow, since I have not seen any mention of it in the patch notes.
ZOS_GinaBruno wrote: »Apologies everyone, I didn't read closely enough when looking at the research bug that was being fixed in yesterday's patch, and it clearly wasn't the one you all are still experiencing. We're still working on fixing this particular issue and will roll it out as soon as we can.