There's a video here of this https://www.youtube.com/watch?v=kf_BDpiEE1k
I managed to reproduce a few times by placing and then immediately breaking the box, and sometimes with the method from that video, but never consistently. Sometimes it happens and sometimes not, and no pattern that I can discern yet.
|
This happened to me too, on a server also running core protect. The funny thing is there were two shulker boxes next to each other, both with items in. One lost its items (and name - I'm pretty sure I had given it a custom name), and the other didn't.
No idea how to reproduce, but I hope this data point will help.
|