What's Happening:
Occasionally, a lava block will randomly spread downwards faster than a water block spreading sideways.
What's Expected:
In the Overworld, lava should always spread slower than water
How to reproduce:
Build the following setup and flick the lever, it should work properly a few times than lava shold beat the water:
Thank you for your report!
We're actually already tracking this issue at MCPE-21038, so we will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki