Article ID: 117421, created on Sep 21, 2013, last review on Nov 13, 2014

  • Applies to:
  • Operations Automation
  • Plesk 11.0 for Linux
  • Plesk 11.5 for Linux
  • Plesk 11.5 for Windows


Sites created with Parallels Presence Builder 11.5 do not work correctly in the Opera browser.

For example, the vertical scrollbar may be missing missing from a site.


When you open a site created in the Web Presence Builder in Opera 12 (and earlier versions), it does not work correctly -- the scrollbar is absent, and the mouse scrolling and PageUp/PageDown buttons do not work.


The Opera browser engine parse code was created by Web Presence Builder incorrectly.

According to system requirements, Parallels Web Presence Builder 11.5 ( supports the following browsers:

  • Internet Explorer versions 9 and 10
  • Mozilla Firefox 19 and later
  • Safari 6 for Mac
  • Google Chrome 25 and later

As the Opera browser is not included in the list of supported browsers, full integration cannot be guaranteed.


Starting from version 15, Opera switched their engine to Blink (this engine is used by Google Chrome). Sites opened in Opera 15/16 are displayed correctly, and the scrollbar, mouse scrolling, and PageUp/PageDown buttons all work correctly.

Please consider upgrading your Opera browser to the latest version.

Parallels Presence Builder will support Opera in a future update. The Feature Request is as follows:

1692834 - Implement Opera browser support in WPB 

The vertical scrollbar issue has been fixed since update 11.5.8:

Release Notes for Parallels Presence Builder 11.5 Standalone

Release Notes for Parallels Presence Builder 11.5 for Parallels Automation

Search Words

vertical scrollbar is missing

Parallels Presence Builder 11.5

do not work correctly in the Opera browser

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