PHP Notice for bg, padding and radius

I am running my site with WP_DEBUG enabled and I have Query Monitor active. Icon Widget is generating 3 PHP Notices for the ‘bg’, ‘padding’ and ‘radius’ elements of the $instance array.

I do realise that the PHP Notice is at the trivial end of issues. I just like to have “quiet” code that doesn’t generate any notices, warnings or errors.

I suggest giving these three attributes non-empty default values in the form() function.
Maybe:
‘bg’ => ‘transparen’,
‘padding’ => ‘0’,
‘radius’ => ‘0’,

In the meantime I’ll use the ‘icon_widget_defaults’ filter to make this change.