If i using newest available source of you mod in my Modpack GTNH i get 100 of this Dust in the Arcane Crafting Table. I can take it out and it refills.
Will test it later with older versions.

I have thaumcraft in my dev environment and on my live server, this issue doesn't happen for me.

Found another recipe. Maybe this are the source of the bug.

get the same amount 100.

I don't know where these recipes come from.. But they're not in my dev environment... Sort of hard to investigate.. Roll back a few versions and see if they are still there whenever you can please.

ok will try with your lastst alpha and with your stabel version.

1.4.9.22 works well no wrong recipes.

1.4.9.38 testing next

Resolved in 2424298.
Thanks for the help in debugging this Mate.