Wrong item names for leaves, after put them in the inventory

Put the summary of the bug you're having here

When I take a leave from the crative-menu to my inventory, the name changes after some seconds to "Eichenlaub" even its birch,spruce or jungle.
Describe what you thought should happen here

The Name of the Item shounld not change. I'm not shure, if its only a problem with the german language file, but when I tryed the english, name won't change.
Describe what happened here

Steps to Reproduce:
0. set language to german
1. Open Inventory in creative mode
2. pick different leaves an put them in your inventory
3. check names of the leaves (all shound have changed to "Eichenlaub"