After the module is installed, the manage tabs disappear. This can be seen even on the drupal installation yt video from ecwid.
Before install at extend there are tabs, after install, no more tabs. These tabs disappear everywhere, and some major drupal features become impossible. Like manage display tabs for example.
It is as if this module "eats"/ replaces/ is over a superior part of the administration window.
Changing the seven theme to other admin themes doesn't solve the issue.
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It's likely this issue predates Contrib.social: some issue and comment data are missing.