Hello, I don't know if this is profile related, but it's the first time that happens to me since I use GB2 (more than 1 year).
It is plain simple: my herbalist - alchemist attemps to harvest ghost iron ore and, obiously, he can't. He stays there mounting and dismounting and trying in a loop.
I've never had to change the option "Harvest minerals" on General Settings or Bot config, as it never hasn't tried to mine anything. But with this, I did, and still nothing.
EDIT: It's the underwater plugin. I disable it and it goes as usual.