Some bugs I noticed (spoilers ahead):
Bug 1 - So, the white puffball mushrooms can just kind of... explode. My friend and I found this out on accident. Whenever they explode, they can leave behind growing puffball mushrooms (like those in the plant pots), which sometimes stack upon each other, leading to more exploding mushrooms, which makes them start to spread like a cancer. Those mushroom rings you can find around the map start to become infested with them.
Bug 2 - As mentioned by user "eggtouch", the yellow wisps/killer wisps still spawn after the pyramid arrives. However, they officially stop spawning once the Rozital Spider Scout things arrive.
Bug 3 - When attempting to nail/pin a paper to a wall in the main room (the signal room), if the paper falls it embeds itself in the wall. It can be grabbed out, but it's slightly frustrating.
Bug 4 - Was playing 0.7.0 (0006) today and for some reason this giant checkered gray box was in the garage, it didn't have any collisions so I could still walk around the garage, and after some time I came back to the base and it vanished; the ATV made a collision noise, the interior door to the garage opened, and there was an extra toolbox in the garage. Dunno what happened, but I also noticed that when copying this issue over to sandbox, the gray box vanished after deleting all foliage.
Bug 5 - This might have already been fixed in 0006, but I would like to make sure, but in 0005, drives could also explode, exclusively in the part of the signal terminals where you play signals; on rare occasions, attempting to extract a signal onto a drive in the slot would make it explode, sometimes even so much as inserting a drive into the slot would cause it to explode.
Bug 6 - When using the Sell Gun, some sold props will drop coins that give 0 points.
Bug 7? - Don't know if this is a bug or not, but I'm getting a lot of mushrooms spawning around my base. Don't know if the spawn rate for mushrooms was increased or if the animal skulls now boost mushroom growth or something, because I do have a lot of animal skulls in my base...
Bug 8 - On a related note, mushrooms can spawn in the river.
Bug 9? - Also don't know if this is a bug or just not implemented yet, but electronic trash cannot be turned into electronic scrap.
Bug 10 - Buckets have a tendency to just kind of... move through walls? Whenever I put a bucket in the utility closet, it always somehow ends up in the stairwell.
Edit: Bug 11 - I think the fully upgraded radar is starting to lag out the game. My game seems to drop 20 frames whenever I look at it.
Edit 2: Regarding above, it seems to have fixed itself? I'm not sure, might still want to look into that.
Edit 3: Nevermind, seems to be happening off and on.