There's a visual bug with Metamorph that only occurs when Galacticraft is also installed. When morphed, the model sometimes renders upside down or with a Bow through the middle of the mob. After more testing, I also occasionally render a horse as well, so I think it's trying to render models that are in the world nearby The inventory also appears to be a bit glitched when morphed. I've attached a few pictures to demonstrate the visual glitches.

I've also posted this report to GC's Github as well. Here's the link: micdoodle8/Galacticraft#2725

These visual glitches occur in both 1.10.2 as well as 1.11.2 when both Galacticraft and Metamorph are present.

The inventory thing is kinda a bug, I mean, I don't think whether is possible to fix because, the way rendering of an entity works in inventory, it's renders a player, which in turn cancels the rendering of the player and instead renders an entity. The thing is, to make it face forwards and be able to look at the cursor, the code is temporarily caches and replaces the values of player's roration, and then restores them.

I'll try to fix the inventory issue ASAP, but I'm not sure about the horses and bows stuck in the player 😂

This bug is called "stack overflow" in the log AND THE CHAT and affects the inventory, it happens because of entity rendering inconpatibity, so it happens with some others mod combinations.