Powder Snow Bucket is not grouped with Snowball or buckets in creative inventory

The bug

Powder Snow Bucket is not grouped together with Water Bucket, Lava Bucket or other buckets in the creative inventory.

How to reproduce

1. Open the creative inventory

2. Navigate to the Miscellaneous tab

3. Scroll to the very bottom
   →❌ Notice how the Powder Snow Bucket is not grouped with the other buckets