__Literally__ every single update, on every single system (android mobile, xbox, PC), On my first world/playthrough of that update, my first meteor spawns inside/next to the dungeon entrance, or on a sky island. 7 times so far. 1.4 was a dungeon world.... a large world without a single living tree(low/no gnomes) or lava charm- Cave dived 4 large worlds for nearly 8 total hours (with pre-hardmode gear) looking for one before I decided I'd spent enough time, I deserved it, and gave myself one from a 1.3 world. Same for rod of discord in 1.4 Over 2500 chaos elemental kills, No drop. even went so far as to build a specific chaos elemental trap which teleported all other mobs outside spawn zone to despawn them... slightly faster than killing the extra enemies. 3 hours of Non-afk farming, 2500 kills, 0 rods. (btw, really hate how they made chaos elementals not spawn as often if you aren't actively moving... rod farm was easy in 1.3)
881 plantera kills on mobile before I got the axe. I don't think I ever played mobile after that day. whole jungle was a plantera bulb spawning surface. 20-30 plantera kills a day for more than a month. PLEASE GIVE US A CRAFTABLE SPAWNER!!!!!!!!!!! it's the only boss (that matters) that doesnt have a spawner.