With a shulker box in the hand look in the bottom of the enderchest and open it ,after, press the key in the keyboard that throw objects for a bit, and at the end you have 2 shulker box in ypur inventary. Please fix it.
MC-131975
A duplication glitch with enderchest and shulker box
Resolved
Duplicate
0
Duplicate of MC-131965, an issue that you created with identical text.