Both the modal and the confirm-window are displayed on IE11.

[mya-zaki]

Two windows are displayed when you click the link that has a data-confirm attribute.
Please see below.

Versions:

• Internet Explorer: 11
• Ruby: 2.6.5
• Rails: 5.2.4
• data-confirm-modal: 1.6.3
• Bootstrap: 4.4

[tagliala]

Hi,

apologies for the late reply.

I can confirm the issue. It only happens when using webpacker

Edit: It happens when using @rails/ujs instead of jquery-ujs, even without webpacker

Demo: https://jsbin.com/lejopuq/

[tagliala]

@vjt with latest versions @rails/ujs, it is possible to override Rails.confirm.

Instead of

data-confirm-modal/vendor/assets/javascripts/data-confirm-modal.js

Lines 315 to 355 in 139459f

	if (window.Rails || $.rails) {
	/**
	* Attaches to Rails' UJS adapter's 'confirm' event, triggered on elements
	* having a `data-confirm` attribute set.
	*
	* If the modal is not visible, then it is spawned and the default Rails
	* confirmation dialog is canceled.
	*
	* If the modal is visible, it means the handler is being called by the
	* modal commit button click handler, as such the user has successfully
	* clicked on the confirm button. In this case Rails' confirm function
	* is briefly overriden, and afterwards reset when the modal is closed.
	*
	*/
	var window_confirm = window.confirm;
	$(document).delegate(settings.elements.join(', '), 'confirm', function() {
	var modal = $(this).getConfirmModal();
	if (!modal.is(':visible')) {
	modal.spawn();
	// Cancel Rails' confirmation
	return false;
	} else {
	// Modal has been confirmed. Override Rails' handler
	window.confirm = function () {
	return true;
	}
	modal.one('hidden.bs.modal', function() {
	// Reset it after modal is closed.
	window.confirm = window_confirm;
	});
	// Proceed with Rails' handlers
	return true;
	}
	});
	}

we could write:

/**
 * Override `Rails.confirm` dialog.
 *
 * If the modal is visible, it means that the handler is being called by the
 * modal commit button click handler, as such the user has successfully
 * clicked on the confirm button.
 *
 * If the modal is not visible, then it is spawned and the default Rails
 * confirmation dialog is canceled.
 *
 */
Rails.confirm = function (message, el) {
  const modal = $(el).getConfirmModal()

  if (modal.is(':visible')) {
    return true
  } else {
    modal.spawn()
    return false
  }
}

It also works on IE11, FWIW