The delete key normally deletes whatever’s selected in Studio, but decals have a special selection mode (enabled when inserting one and also when double clicking on a part that has a decal on that face) that can break this.
Repro steps:
- Enter play solo
- Select character in explorer and copy
- Exit play solo
- Paste character
- Double click face to select decal
- Press delete
- Hold alt and click the head to select
- Press delete
Expected behavior:
Part is deleted
Actual behavior:
Nothing