Glowstone, Gunpowder, and Redstone don't go into brewing stands automatically.

I was experimenting with hoppers and brewing stands, trying to make an automatic brewing station, and I realized that when trying to put redstone, glowstone, or gunpowder in a brewing stand using a hopper (pointing into the top), it would not go in. I tested it with fermented spider eyes, glistering melon, and nether wart also and those did go in.