[znouza]

operation:
step1: object properties -> material -> plugin -> select dielectric, click create.
step2: plugin -> edit -> select type as Polycarbonate. Click OK.
step3: plugin -> edit -> and there appears Crown as Type (instead of selected Polycarbonate)

and there's no way to return from material edit without:
- pressing Esc - causes to lost the material, the same way as you click Delete
- pressing OK - but if you want to NOT apply the changes, this is the bad way
- pressing Delete - the same result as Esc