Snapshots don't work

Whenever I try to play in a snapshot, the new features of the update do not appear, as if I had not changed the game version. I tested snapshot 23w04a, when I enter it, it's like I'm still playing in the last officially released version, in this case 1.19.3, as you can see, the blacksmithing table doesn't show the new interface, and I can't find resources new to the game like bamboo blocks, could you help me?