Yup, confirmed it. Gathering's broke, at least for me.

1) Logged on, at 214 stamina.
2) Used a gather, the icon afterwards says I gained 30 stamina from the gather.
3) Click to close the gather window, and my stamina is at... 201.
4) Force-reloaded the page, still at 201, so it's not just a graphical glitch.

(Don't think guests can post links, but I took screenshots of it to confirm I'm not just seeing things. It's very clearly 214 and then 201.)

So apparently 214+30 = 201 now. Wonder what happens if you use it when you're out of stamina, does it go negative?