When using the spyglass in offhand and the crossbow in main hand, the hand model doesn't attach to the spyglass, so the spyglass stays floating in the air.

Also the crossbow model looks weird when just holding it with a charged crossbow

How to reproduce:

Step 1: Put spyglass in offhand

Step 2: Charge a crossbow in mainhand
Step 3: Switch from the charged crossbow slot onto any other slot

Step 4: Use the spyglass

Step 5: Hotkey in the spyglass slot

Step 6: Go into the 3-rd person view