Ladders in igloos don't reach the ground

The Bug:

Ladders in igloos don't reach the ground.

Here is an example:

Version: 1.21.3

Seed: -8810289815584221700
Coordinates: /execute in minecraft:overworld run tp @s 4899.94 46.00 8051.87 375.42 21.54

Steps to Reproduce:

1. Generate a world with the seed provided above and teleport to the given coordinates.

2. Look at the ladders within the igloo closely.

3. Take note as to whether or not ladders in igloos reach the ground.

Observed Behavior:

Ladders don't reach the ground.

Expected Behavior:

Ladders would reach the ground.