A lot of people seem to have this issue, and abandoning sure isn't working. Clearing WDB doesn't seem to either.
Making an in game ticket tells them to make a bug report. There's 4 bug reports about it up now (
http://report.nostalrius.org/plugins/tr ... tracker=14 ). The first one from 20 july. None of them are confirmed yet.
I'm hoping that maybe a server reset will fix it, otherwise we'll pretty soon have a whole bunch of druids not being able to cleanse poisons.
edit: I guess its not a huge disaster as druids do learn Abolish Poison at 26, but still.