icon picker of icon list automatically goes back to default “angle-right” icon

Hi,

I am using the “icon list” block to list contact information. I have four list items, for which I set a different icon from the icon picker: address –> address-card, email –> envelope, telephone –> phone-alt and fax –> fax. This works just fine until I change anything on the page and save these changes. At that time, the icon list changes back to default and show all “angle-right” icons again.

Could this be a little bug?
Any ideas on how I can keep my personalized icons?

Thank you so much for your time.

Kind regards,
Tine