• If I put/attach 1 woodpile and one kindling to a stove, light it, and then attach (or drag/drop) a pile of 3 woodpiles onto the existing 1, the pile number changes to 1.8 / 6
• If I attach a pile of 3 woodpiles to an empty stove, then it shows 0.8 / 6 (the fire goes out within the time period you would expect 0.8 woodpiles to last too)
• Kindling does not destroy itself after you have ignited the fire in the stove.
• I can no longer attach a prebuilf 'fireplace' to a stove. (Maybe this is a feature of 1.13 ?)
• Fireplaces / Stoves no longer give heat to a player (see screenshot) UNTIL you run out of the house, then WHAM you see that your player has a flashing yellow or red temperature gauge !!

https://imgur.com/a/AK9gkfY