Named chests and trapped lose their name when combined into a large chest and then regain when broken.
This was in 1.14, but according to Jira, that doesn't exist. So your bug reporting has a bug. Where do I report that?
MC-170749
Chest names don't work
Resolved
Duplicate
0
We only accept issues for the latest version. Update your game and you'll see this has already been fixed.