[Solved] Ship Designer Part Grouping and New Parts Not Working?

Hey, I'm having an issue where grouping parts in the ship designer and making new parts out of collections of old ones don't seem to be working for me.

For the grouping, I select multiple parts and then click the group button, but nothing seems to happen. The parts don't seem to be meaningfully grouped in any way.

As far as the custom parts go, I select the parts and then click the button to save it. A dialogue pops up for me to name it, but after I do, I can't seem to find the new part anywhere.

Is anyone else having these issues, or is it just me?

Thanks!