My game has a bug where any more water and hostile mobs appear than probably should. It was on normal difficulty when they generated this way. I went to Easy Mode and the hostile mob generation was still very high. The generation caused lag as well as crashed the game at one point without closing the actual game.
Environment
After generating a new world as a single player file on creative, and having that day go through the first day and night cycle. Gamerule mobGriefing was turned to false.
Thank you for your report!
However, this issue is a Duplicate of MC-137497.
If you have additional information, please add it to that report.
Please search before reporting, as it's likely that one exists already.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki