I quite like this game overall, as far as I managed to play, a good isekai venture into crafting and skill grinding.
Most notably, in upating to 1.2 to check if these problems were fixed, I can't figure out how to equip the pickaxe to the cave any more. Dragging it around to different spots or having it selected in the inventory both don't seem to do anything. 1.2 also seems to have added a silly bug where the loot tables in the cave menu are duplicated for every time you've opened the cave menu.
It took me a long time to figure out that I had to drag and drop items from the furnace menu to the crucible menu to craft with them, as discussed earlier, but my problem is that in that time my mining skill had levelled to the point where getting stone from the mines only happened on a dice roll of 0, so the later act of repairing the furnace to get access to all the stone that was in the furnace (due to using the add all materials button) would have taken unreasonably long, as would the 200 stone for repairing the floor (of which I believe I got only about 100 before my mining skill was too high to get much more).