It was designed this way. I therefore suggest that you file a bug report on the upstream bug tracker [1] and explain why the visibility of the search field needs to be changed for embedded settings windows.
[1] https://bugzilla.xfce.org/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1306898 Title: xfce4-settings-manager: session and startup: search field inactive To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1306898/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
