Should be priority. Bees have been in the game for a few years now. It's pretty absurd to keep making new shit if nobody is going to fix what already exists. That's just asking for a spaghetti-coded mess that will cause further delay later down the line.
Beyond this, I struggle to believe that a change so small would take any significant amount of time to implement. Smells like an excuse, to me. Damn game is owned by a multi-billion dollar company, and you can't find the time to pay one person to write a few lines to make the bees check the biome before they successfully spawn? Oh, but we can find time to sort out goat AI... Goats are worthless, beyond aestheticism and minor annoyance for survival players.
Priorities, you say?
One genuinely has to wonder whether Mojang believes we're all blubbering morons, unable to figure out whether we should wind our ass or scratch our watch. Nothing this team has done in the last 2-3 major up...