I have added Custom Options for a product and saved it. When I opened the store level scope for the that product and I go under the Custom Options all of the options are unchecked.
I again click on the checkbox of all (Use Default Value) and saved. When I checked it collapsible it was Use Default value.
Now I reload the product page and just saved the product without opening the collapsible for Custom Options. Now after saving the product I opened the collapsible for Custom Option I noticed that the Use Default value is unchecked.
What cause this problem and how can I fix it?