Pillager outpost roofs are asymmetrical

The bug

One of the four corners of a Pillager Outpost roof is missing two blocks making it asymmetrical, as can be seen in the screenshot.

How to reproduce

1. Use the /locate command to find a Pillager Outpost
2. Teleport to the location given by the /locate command
3. Observe the asymmetrical roof of the outpost at that location

This is also the case for the overgrown version of the Pillager Outpost.

This is an issue on both Java and Bedrock edition.

Java Edition bug report: MC-154097