Blocks play breaking sound and particles if support block is destroyed
The bug
If a block is destroyed due to a missing support block (e.g. the block that a torch is attached to is destroyed), said block will play breaking sound and particles despite you not breaking it directly. This seems to affect all blocks except for rails.
In versions 17w46a and prior, the only blocks that do this are chorus fruit and cacti; other blocks such as torches, stairs and grass would simply disappear.