Torch duplication glitch
When spamming torches in a water source where the water breaks them, there is a high chance of the torches duplicating.
This may have been a long term glitch, but I have only just found it in 1.0.8 and is also in 1.1.0.9.
I'm using a Bush Spira B3 and also works on all other versions (iOS/windows 10)