1. Most graphics options while playing don't seem to change, only HDR seems to make a difference. Although some seemed to work the first time I started the game. The same happens with the sound. The slider moves but the number remains at 100.
2. The ballista and turret have their names/descriptions interchanged (I think I saw this mentioned elsewhere).
3. The rarity of all items show Unique, even the common ones.
4. When trying to manually place a single filter item for the filtered router, the item remains "floating" above the structure. If one clicks on another item, the one clicked is lost, and the hovering item disappears. If one tries to place the same item with a stack, the item is placed but the amount doesn't decrease. After taking out the filter item, the stack returns to the original amount in the beginning. A workaround I found is to configure it semi-automatically by sending items through a barrel.
5. The player sometimes can't grab an item that's too close and gets pushed by it.
6. The game starts lagging after a while, I thought it was the world size (which might be a factor) but the game returned to normal after shutting down and starting it over. Intel Core i7-3630QM CPU @ 2.40GHz, Intel HD Graphics 4000.
7. Some weapons (even your hand) can damage your own structures, not sure if it's intentional but the magic ones don't.
8. This may be a feature request if not a bug. The items inside a barrel are lost if the container is destroyed.
9. This is subtle, probably hard to pinpoint, but a group of iron ores (6 extractors with one conveyor belt) were entering the furnace slowly and forming a line, as a bottleneck. I thought it was normal till it sped up after removing an adjacent copper barrel (I'm pretty sure it wasn't connected to the system).
10. Not sure if it's a bug but there were a lot of hearts in the snowy biome. Maybe they just spawned over the course of a longer playtime, since it was my first world.
11. Sinterred is typed with "rr" in the skill tree, while items have it as "sintered". The charcoal production facility is the only one that mentions charcoal instead of coal.