[Thaumcraft 4] Voidmetal Wand Caps vs. Pure Nodes

[Baalem]

Interesting question here. When using a wand with voidmetal caps, do pure nodes not allow you to drain any vis with that wand? Or is there something else at work here?
When I tried, I was getting nothing. I immediately went to a different, non-pure node and was able to recharge. If it doesn't let you, then that's a fascinating detail to have in the mod.

 

[Xltimus]

I've noticed in my modpack that nodes that are still embedded inside of blocks, like a silverwood log or obsidian totem aren't updating clientside as they should. They can still be drained and they'll regenerate, but as far as being read from a thaumometer- they're not updating.

I could still be totally wrong, as that is a rather interesting detail and/or "unintended feature".