Can't place itemframe on furniture

Placing item frames on top of furniture barrier blocks causes them to break/pop off. · Issue #1913 · PluginBugs/Issues-ItemsAdderGitHub

It's a Minecraft behaviour, the game is forcefully making itemframe removed because it is inside another entity, in this case the furniture itemframe.

Solution

Reduce the furniture itemframe height of 0.1. For example 1 -> 0.9, 2 -> 1.9 etc.

        hitbox:
          length: 1
          width: 1
          height: 1.9