I really like this version of Terraria, and I'm very excited to see what is added to it in the near future. I've pretty much played the heck out of it, and noticed a lot of things, so here is my bug/curiosity list if anyone cares to read it.
I'm aware Duke Fishron can't spawn yet, but I have also spent a lot of time looking for truffle worms and it seems they don't spawn either.
When fighting the Solar Eclipse, the ground enemies such as Swamp Creature, Eyezor and Frankenstein don't spawn long enough for me to fight them. If I keep running back and forth, some will stay on the screen, but most despawn before I can reach them. This makes it quite difficult to get broken hero swords, as I have fought at least 7 eclipses and only gotten one sword piece. I often use the map while fighting, and I see the enemies only show up for an instant before disappearing. It happens very frequently.
I don't know if I should point this out, because it makes reaching hardmode MUCH easier, but the Wall of Flesh appears to have a very low amount of health.
Fishing seems to be quite bugged. In most biomes excluding the caverns, ice biome, and jungle, all I can catch is bass. When I fish at the ocean, tuna, shrimp, trout, red snapper, swordfish, and whatever else you're supposed to catch there doesn't show up. There are no crates, either. I also can't catch a single fish in honey. The only biome I've been able to find quest fish in so far is caverns. Also, about 80% of the time, the bobber will be pulled under the water as though I've caught a fish, but I'll reel it in and catch nothing. Granted, I haven't yet gotten the high test fishing line, so my line may just be breaking every time, but it seems to happen too often for that to be the case.
A couple of trophies I've placed became invisible and then when mined they turned into paintings. Kinda sad about that Ocram trophy, which turned into a gold painting called "Impact".
I cannot craft a watch, glass kiln, various other furniture items, or naughty present as their crafting recipes do not show up even when all the materials are in my inventory.
Other than all that, the game has run pretty well, save for the low frame rate which I understand due to the old 3ds tech. Haven't had a single crash yet, either. Got the Zapinator, that was pretty funny. But yeah. Thanks for the 3ds port of this great game, and I can't wait for those updates!
EDIT: Oh right, a couple of other things I noticed.
When King Slime is defeated it drops iron pickaxes and dirt blocks along with ninja gear and gels.
I've seen duplicate NPC's(two merchants and two dryads), and I cannot buy a music box, which for some reason is priced at 0 coins, and when I check it in my inventory after "purchasing" one, it will say I have 0 in my inventory and when I close my inventory it disappears.
Some NPC's have mixed lines. The Nurse quotes the dryad, the steampunker does the same thing, and the painter sometimes quotes the clothier. I've seen others too but I can't remember them all at present.
If the Angler dies I have to find him at the ocean again, instead of him moving back in on his own.
Also, it's still Christmas! When will it end?