Carry On-v1.1.1
Forge v1.10.2-2316

The tile entities disappeared completely after being placed. It affects the display case from the Miniheads Mod and all the tile entities from Rustic. Something similar seems to happen with the Simple Barrels Mod, except the block still exists, but the display indicator addons and the items inside disappear instead.

@Tschipp Looks like we could have some new compat issues, from the 1.1.1 version.

Should no longer be a problem with the latest version