IE flickering bug

[windmaomao]

IMPORTANT: Please provide a sample using: http://plnkr.co/edit/lV7zsw7Yqossgs9JOfQU?p=preview

• I'm submitting a ...
  [x] bug report
  [ ] feature request
  [ ] question about the decisions made in the repository

• Do you want to request a feature or report a bug?

I'm reporting a bug.

• What is the current behavior?

If you load IE, and visit demo page, http://shlomiassaf.github.io/ngx-modialog/#/bootstrap-demo. This gives you flickering effect

• If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem via
  https://plnkr.co or similar (you can use one of the templates above as a starting point).

• What is the expected behavior?

• What is the motivation / use case for changing the behavior?

• Please tell us about your environment:

• Angular version: ?
• Browser: [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]

IE11

• Other information (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. stackoverflow, gitter, etc)

I actually managed to solve it, don't know exactly how, but here's the hack for now.

Just a hack for now, /plugins/bootstrap/bundle/ngx-modialog-bootstrap.es5.js, under create function,

change the line

        // backdrop.addClass('modal-backdrop fade', true);
        backdrop.addClass('modal-backdrop', true);

and add a line

            backdrop.addClass('fade');
            backdrop.removeClass(animationClass);

This will remove the flicking effect in IE. I can do a PR if needed.