Primeng: ConfirmDialog screen position not working properly

[cleitondutra]

[X] bug report

Current behavior

Go to a page that has scroll, open the confirmDialog, example in attached image.

Expected behavior

After running confirmDialog the page position (that is in the background) should not go to the top of the page. The position of the screen should remain in the same position when the dialog was opened.

Minimal reproduction of the problem with instructions
Image

• Angular version: 6.X

• PrimeNG version: 6.1.2

• Browser: [all]
  

• Language: [all]

[cagataycivici]

This is a regression caused by trying to support iOS block scroll, more info at;

https://medium.com/jsdownunder/locking-body-scroll-for-all-devices-22def9615177

I'll just revert it as it causes more problems and keep iOS issue as open.