The superfish menu can end up on top of core dialogs, such as views "Configure field". As far as I can see this is not specific to my website, but occurs with Drupal core.
\core\themes\seven\css\components\dialog.css assigns z-index: 1260 to .ui-dialog
I wonder if this is a recent change as I've not noticed it before. Perhaps superfish.css ought to change to 97..99?
Closed: outdated
1.0
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
I can no longer reproduce this. It seems that the order of CSS inclusion in core has changed so that the z-index of 1260 takes precedence over the z-index of 100.