Minecraft wiki entry for Crossbow, associated text: Alongside pillagers, crossbows were inspired by Minecraft Dungeons, even though they were added in the base game first.[2]
Crossbows enchanted with Quick Charge VI and above get stuck on the first frame on the recharging animation because the resulting charge time is negative, and the game never reaches the time markers that tell it to advance the animation or the reloading procedure itself. It is technically possible to charge such crossbows, but this would require overflowing the value that determines how long the crossbow has been charged. This takes such an amount of time that this is practically impossible: for example, charging a crossbow with Quick Charge VI would take 69.4 years to complete.
Loading a crossbow with fireworks and then firing it at an enderman or wither with its wither armor active can damage it. This is because fireworks deal explosion damage and not projectile damage. This is the only method of damaging an enderman or a wither with its wither armor at a long-range.
The Piercing enchantment can be useful to save arrows because they can still be picked up after they hit a wall.
Although Piercing allows arrows to bypass shields, they can't get through the wither armor.
The crossbow's first-person loading animation in Bedrock is different from Java.
Even if a crossbow is already wound with a projectile, when it drops on the ground, it always looks uncharged.[3]