Give the banner a name on an anvil.
Place your named banner somewhere.
Break it.
Collect it again.
The banner don't have it's name anymore.
Environment
OS X 10.9.4
Apples old Java 1.6
Give the banner a name on an anvil.
Place your named banner somewhere.
Break it.
Collect it again.
The banner don't have it's name anymore.
OS X 10.9.4
Apples old Java 1.6
Every block does that.