Iron golems can spawn inside of non-full blocks

Yes, this is seriously problematic.  They are spawning in gardens, inside houses, partially underground, etc.  I have a 2-story house and I keep tripping on the parts of their heads sticking up through the floor.  When is this going to get fixed?

Why aren't the mods sorting this serious issue out?! 

Because we're not the ones who sort issues out.

Haven't been able to test if this is still happening with the full release of 1.14.2 but it definitely still occurs in 1.14.2 PRE-4. I've found them spawning inside slabs, and either in carpet or on beds (not certain which, I didn't see it spawn in just that it was in a room where those were the only surfaces).

Minecraft 1.14.3 pre-release 3

Linux Mint 19

Still happens.  Iron golems  spawning on upside-down slabs.

Same thing here. On slabs and in rooms 2.5 blocks high. Their spawn seems to ignore half slabs or more specifically not full blocks.

I believe it still happens in 1.14.4

Can confirm that this is still happening in 1.14.4. I'm experiencing the same issue Sean mentioned; golems are still spawning in spaces that are only 2 blocks high if the block right above it is not a full block. It even happens if the block right above them can make them suffocate, like a staircase.

They can even spawn like this :     in slab and in 1.5 block wall

Same issue here. made all spaces around the building non-spawnable, but the golems keep spawning in on top of half slabs, inside of fences on the building wall. 

I've had this happen in 1.15.2 recently. The Golems will spawn inside glass blocks if the block next to it is spawnable, i.e. stone block

EDITED to add photos

Confirming same undesirable behaviour in 1.16 / 20w13b. I've reconfigured the border of this trap many times with same results:

Golems are spawning inside half-slabs which are on top of glass/transparent blocks.

They spawn half-in glass blocks, no slabs involved.

They spawn partially in wood and take damage.

+1 on 20w19a : I have completely new constructions in different worlds with similar behaviours. I've tried many different kinds of walls with fences, all solid blocks, half blocks together and staggered, and a combination of a fence in the ground-level block with a full/solid block above that - the idea so far has been to allow the golem to spawn in a block with a fence or other partial block next to it but to try to get it to keep away from the higher solid block. Golems continue to spawn partially in walls.

The golems are also getting stuck in solid blocks on their side as they're flowing in water. So with a typical iron farm the golem spawns then starts to float away, but it will get stuck in the walls bordering the water flow.

HTH