Fire can't be placed on core wood logs

Treehouse building was wonderful until this option was removed; now it's a real bummer.

I hope this is a bug and was not removed on purpose. This game is punishing already and for many of us takes ages to get to iron. We were enjoying playing it slow, and now it feels even more like a material grind (for stone and iron beams, assuming that's the only way now) just to get the most basic requirement that was previously attainable at this level and which fit well with the other building mechanics.

We can raise the ground, but height is limited and making an earth pillar for a single fire looks awful. It ruins the entire tree fort aesthetic.