How to reproduice:
Place a campfire and turn it off with a shovel, a water bucket or with a command block.

The problem:
Look at the bottom of the campfire and you will notice there is missing UV.

Expected change:
Match the Java model or adding missing logs UV to the bottom logs.

Other way to fix:
The campfire off is using as model the lit campfire. By creating a different campfire model for the off campfire and making adjustement to the UV to move it to the log, it will fix the problem.{}