Now this is just dumb.
Yeah, stone doesn't appear when using #stone. Also many other stone-like blocks such as Diorite, Granite, Andesite, Calcite, Tuff, Deepslate, and Infested Stone Bricks. If blocks such as Blackstone And Stone Bricks come up when typing in "#stone" then the other blocks should also come up, like stone!
The relevant item tags here are
stone_tool_materialsstone_crafting_materialsredstone_oresstone_bricksStone is not a member of any of these tags, therefore this is working properly.