When blocks are placed above the End altar, the Ender Dragon comes to rest on top of said blocks rather than on top of the altar

When a column of blocks are placed above the bedrock altar in the center of the end and the ender dragon perches, they will rest atop the column of blocks.

Steps to reproduce

• Place a column of however many blocks above the center of the altar
• Wait until the dragon perches and observe where it rests

Code analysis

Code analysis by [Mod] Chandler can be found in this comment.