I discovered a bug. New Version.
Hover mouse cursor over inventory slot, then using Shift + Number (keyboard, not numpad) to switch items from inventory to hud, the item's inventory copies the shape of the item in hud or vice versa (instead of trading places.) After some messing around to see if I could figure out exactly what's creating it, it seems intermittent, but can confirm the following:
Note: I am left-handed. Mouse always with left hand, so rekey move/action commands to the num pad. In this case, I'm in fly mode, gm 0, with caps lock, scroll lock, and num lock off. Not trying to move or use the numpad for any of this.
Verified gm 0, fly mode off, num lock on/off doesn't matter, caps lock off, scroll lock off.
It's happened to many different materials and shapes, (materials: copper, sandstone, ceramic roof) (shapes: sphere, inverse arc, slope, pillar.) It copies the shape, but the material is the same as the original, so, if they were not the same shape *or* material as before, one will copy the other shape and still swap places from HUD slot to inventory slot. If the same material, but different shapes, it copies the shape and groups both into the HUD slot.
Tried with many different inventory slots vs HUD slots and I can't figure out why some work and some don't. It's about half and half.
See screen shots below. Happy to share my command key settings if you want, just tell me where the file is so I don't have to screen shot that too.
Good luck,
Kess