Some of those variables are local and some are global.
They either all should be local or all should be global.
You can do the wood gathering and the brahmin killing miniquests once. Although you can get the locations many times to just turn around and leave. Completely pointless forced encounters.
You can, however do the rat in the well every time you get the location.
Didn't bother to test the plants, but I believe they use local variables as well as the rat-in-the-well encounter.
It's just a bit annoying little thing.
Just found a bug for it:
https://forum.fonline-reloaded.net/index.php?topic=13103.0
Topic: fix the farm forced encounters variable's scope. (Read 2275 times)