[fixed] "Someone else is already working on this patch"
I'm getting this error in a number of places. Nobody else is in the area. I can use nearby patches. One of these patches is in Upper Valley Heights, Groddle Forest and I've encountered another in Yeoman's Bluff.
I believe I was in Upper Valley Heights when I received this error as well. When I tried to plant a bean there it said I should clear the weeds, even though I had just tried with the above error.
If you see any that are reporting "someone else is working on this patch" (when, clearly, there's no-one else near it), let us know here (or, maybe better, in the in-game help channel) and we'll send around a crack team of patch-uncloggers immediately.