If you load one crossbow in the mainhand and press F to switch to the unloaded crossbow, the crossbow in your mainhand may desync client-side.

Steps to Reproduce:

1. Have a crossbow in your mainhand and offhand
2. Get an arrow
3. Hold the right mouse button and hold the crossbow in the loading animation
4. Press the F key at the same time you stop holding the right mouse button

Observed Results:
The crossbow in the mainhand desyncs and it appears to be loaded visually.

Expected Results:
The crossbow in the mainhand should not appear to be loaded as the arrow is still in your inventory

Screenshots/Videos:
2024-10-19 18-06-11.mp4

Notes:
You may need to try multiple times to get the timing right. Only works when the two crossbows are above a certain amount of durability for some reason. You can give yourself two unbreakable crossbows:

/give @s minecraft:crossbow[minecraft:unbreakable={}] 2