Playing as a vampire you should normally be able to click the solve need and it would drink a plasma bag.
This isn't working properly, they drink ONE bag only if your need is such that you see the biting icon (because your plasma is low). Then it drinks one, and if you click again you just get the pathing animation or something like it and they don't drink again.
Meaning, you can't fill up so you don't have to worry about it for a while.
Also, it doesn't use plasma fruits even though the very icon on the solve need button tooltip has the plasma fruit listed there.
Edit By crinrict: Adjusted Title to fit old bug report, added platform from old thread.
