Guild Wars 2

While jewelcrafting, silver filigree just now suddenly stopped appearing in my discovery tab. I have used it many time before, and just used it successfully a moment before. I quit and rebooted, but still, silver filigree will no longer show up in the discovery tab. I sent in a bug report with screenshots showing it in my inventory but not showing up in the discovery tab.

Anyone else have any experience with such a thing?

Items disappear from the discovery tab if you have discovered all the recipes with it.

Thank you. I thought that might be it, but there seem some that I have yet to discover (based on a recipe list I found). Perhaps the list is incorrect.