Bugged

Today, I was playing survival with haste 255 applied. My friend had dug a tunnel, and at first, he said creepers kept spawning. When I spectated, they were spawning at a fixed rate from the same spot for about 5 seconds. Anyway, it ended. I was mining diamonds for 3 hours and only got 20, so I kept mining, and suddenly my friend said lightning was striking. I looked, and sure enough, lightning was striking only my friend. He said a blaze spawned too, but it was in the Overworld? Finally, he said a Warden suddenly appeared. But then my friend suspected me, and we fought. The TNT bug last time was also weird. Last time, Mojang emailed me saying, "It seems TNT repeatedly exploded due to errors and system conflicts during multiplayer." But seriously, this is the first time I've seen a bug like this in 6 years of playing Minecraft. Damn it.