I don't know if you missed a step but you need to a. Have the candle on the table and lit; b. Have all three ingredients in the bowl; c. Have your hand in the shape of the bowl to scoop up the dust. If you've done all of this and it still doesn't let you do it then maybe it's a bug! But if it is I can't seem to replicate it.
Ohh okay now I understand! The bug is that the description says that the candle is there after you break the drawer but it actually isn't!
What you actually need to do is get the shape of the hand and act on the drawer to put the candle on the table! Otherwise there is no candle there haha.
Sorry about that, I pushed an update that should fix it and make it less confusing. And thanks for helping me find the bug!