Torches disappear after quitting the game

Put the summary of the bug you're having here

What I expected to happen was...:
torches not disappearing

What actually happened was...:
after I restarted my client, my torches somehow vanished

Steps to Reproduce:
1. open minecraft and make a survival world
2. place torches in an enclosed area (e.g. a shelter)
3. restart minecraft and open the world again