I wanted to scan glowstone dust with my Thaumometer, only to find the latter had gone missing from my inventory. So I right-clicked the storage scanner to see if I put it in a chest, only to find it rotated instead of opening the GUI. I was confused, as I was holding the glowstone dust I wanted to scan, not a wrench or anything. I don't see why glowstone dust of all things would have this effect, so I'm assuming it's a bug.

Yep

Yes, known bug and already reported. Closing this as a duplicate.

Wow, that was fast. I actually saw your comment appear. Didn't know Github did that.

I searched for "glowstone" in the issue tracker by the way, and I didn't see that issue reported. If that issue is known but not in the bug tracker except for this particular report, shouldn't it be reopened since it's not really a duplicate?

EDIT: Never mind; it's #197. It just doesn't mention glowstone; apparently it works with some other vanilla crafting materials too.