The fire does not spread. I have included all the rules of the game for that. I'm sorry, but I couldn't attach the screenshots. Read more: When I take a lighter and press the block, the fire is displayed, but the other blocks are not covered.
MCPE-76562
fire doesn't work
Resolved
Invalid
0
Fire spread was fixed in a previous BETA update.
Please make sure you are running the latest BETA update and if still having issues with a new world head over to MCPE-69075.
Ionic