Summary:
When aiming at a mob spawner, most items with a use function cannot be used.

The following items cannot be used when aiming at a mob spawner:

• Eggs
• Snowballs
• Honey bottles
• Potions, splash potions, and lingering potions
• Bows and crossbows
• Tridents
• Fishing rods
• Maps
• Armor
• All food items
• Ender pearls
• Eyes of ender
• Bottles o' enchanting
• Books and quills

The following items can:

• Blocks
• Armor stands
• Flint and steel
• Fire charges
• Fireworks
• Buckets of fish, water buckets, and lava buckets
• Spawn eggs

Steps to Reproduce:

1. Place down a mob spawner
2. Obtain any of the affected items
3. Try to use the item while aiming at the mob spawner

Observed Results:
The item cannot be used.

Expected Results:
The item can be used.