Choose Icon not working

In the SiteOrigin Features widget, when I add a new feature, the “Choose Icon” dropdown works correctly. However, when I duplicate a feature, the “Choose Icon” dropdown does not function.

I tested this in versions 1.70.3, 1.70.2, 1.70.1, and 1.70.0, and the issue occurs in all of them. Therefore, I had to downgrade the plugin to version 1.68.3.