Change line:
// Add open in visual studio icon to localhost to open/start ds.code-workspace file
$ds_runtime->add_action( 'domain_button_group', 'vsc_domain_button_group', 50 );
to
// Add open in visual studio icon to localhost to open/start ds.code-workspace file
$ds_runtime->add_action( 'domain_button_group_after', 'vsc_domain_button_group', 50 );
Change line: // Add open in visual studio icon to localhost to open/start ds.code-workspace file $ds_runtime->add_action( 'domain_button_group', 'vsc_domain_button_group', 50 );
to
// Add open in visual studio icon to localhost to open/start ds.code-workspace file $ds_runtime->add_action( 'domain_button_group_after', 'vsc_domain_button_group', 50 );