When the client hovers over a custom named fireworkscharge, they crash.
This can be reproduced in vanilla by following these steps:

• Acquire a `fireworkscharge`
• Acquire an anvil
• Give a custom name to the fireworkscharge.
• When you try moving the anvil's result item (i.e. the custom named fireworkscharge, hovering over the result item in the process), you will crash.