If you set player scale to 0.25 and walk up to a wall in 3rd person(back facing) the camera suddenly zooms in when too close.

Make sure to face the wall in 3rd person(back facing)

How to reproduce:

1. Do command /attribute @p minecraft:generic.scale base set 0.25
2. Now go into 3rd person [f5]
3. Walk up to a wall(facing the wall)
4. 
5. Notice the sudden zoom when too close
6.