When mining Ender Chests with a diamond pick with silk touch enchantment (as well as several other enchantments) the Ender chest breaks into obsidian. two players on my server reported, and I was able to replicate. This only started occurring after updating to 1.13.2.

Note: the visuals look odd because i'm using a texture pack. I have not tested without the texture pack, but AFAIK that shouldn't be able to cause these kinds of glitches.

May be related to MC-690 (closed)