Custom Sidebar Stuck at sidebar location

Hi Kanana,

I hope you are well today and thank you for your question.

I could reproduce the conflict issue on my test site using latest version of Custom Sidebars plugin and the following Feature A Page Widget plugin.

https://www.ads-software.com/plugins/feature-a-page-widget

To resolve the issue please try changing the code in the following Feature A Page Widget plugin plugin on line number 60 as displayed below.

Feature A Page Widget plugin file:
wp-content/plugins/feature-a-page-widget/js/fpw_admin.js

Before Editing:

// Fire off chosen on save-widget callback, else the vanilla select reappears.
// Thanks https://www.johngadbois.com/adding-your-own-callbacks-to-wordpress-ajax-requests/
$(document).ajaxSuccess(function(e, xhr, settings) {

	if(settings.data.search('action=save-widget') != -1 && settings.data.search('id_base=fpw_widget') != -1) {
		// as of WP 3.6, the activeElement isn't within the widget anymore :( so this doesn't work.
		// $widget = $(e.currentTarget.activeElement).parents('.widget');
		// fpwSetChosen( $widget );
		fpwActivateChosen();
	}

	if(settings.data.search('action=widgets-order') != -1) {
		fpwActivateChosen();
	}

});

After Editing:

// Fire off chosen on save-widget callback, else the vanilla select reappears.
// Thanks https://www.johngadbois.com/adding-your-own-callbacks-to-wordpress-ajax-requests/
$(document).ajaxSuccess(function(e, xhr, settings) {
	if (typeof settings.data.search == 'function') {
	if(settings.data.search('action=save-widget') != -1 && settings.data.search('id_base=fpw_widget') != -1) {
		// as of WP 3.6, the activeElement isn't within the widget anymore :( so this doesn't work.
		// $widget = $(e.currentTarget.activeElement).parents('.widget');
		// fpwSetChosen( $widget );
		fpwActivateChosen();
	}

	if(settings.data.search('action=widgets-order') != -1) {
		fpwActivateChosen();
	}
	}
});

Note: You are making changes in the plugin file and these changes will be overwritten and lost when you update the plugin and you will have to make these changes again after plugin updation.

Best Regards,
Vinod Dalvi

It works like a charm!