Slanted sometimes generates with a missing quadrant

Slanted is sometimes missing a quadrant, resulting in an empty space within the chamber.

 

How to reproduce?

1. Use /place structure minecraft:trial_chambers until you find a Slanted room affected

 

Example of seed where this happens

• 3574257374424963299
• /execute in minecraft:overworld run tp @s -1489.57 0.24 -284.58 259.62 7.00