What I expected to happen was...

My view should not be clipping through blocks.

What actually happened was...

My view clips through blocks, allowing me to see the world through blocks.

How to replicate

This works with any scale below 0.4, but I feel it's the most easily noticeable with the game still being playable at 0.25.

1. Set your scale to 0.25 (/attribute @s minecraft:generic.scale base set 0.25).
2. Brush up against a corner of two blocks.