There is a similar issue reported for Console Edition: **MCCE-4349

Icons in chests and inventory are not showing enchantments, and in some cases are appearing with holes (Leather Armor in screenshot).

In the screenshot of bows, half the bows are enchanted, but there's no way to tell.

Note that my kids have joined the world on Android tablets and see the same issue. I have tried restoring an older version of the world where I know the issue was not happening, and it is affecting that as well.