The hitbox of shulker bullets for attackers is far larger than visually displayed

The hitboxes for attacking shulker bullets (to destroy them) are far larger than they should be (significantly inflated compared to their true hitboxes). This issue causes shulker bullets to become far easier to destroy than intended, and causes it to become impossible to break/place blocks or attack other entities when a shulker bullet is in the vicinity.

This also affects wind charges (https://report.bugs.mojang.com/servicedesk/customer/portal/2/MC-266871), which is especially problematic as it causes players to become briefly invincible when they throw a wind charge to launch themselves. The goal may have been to allow wind charges to be reflected easier, but it causes these side effects.