This is updated in the latest version: 2.0.x-dev. Moving to RTBC
There are a couple of block regions that are named "Fooder Third" and "Fooder bottom". Unless they have something to do with the breadcrumbs they are likely spelt wrong.
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
This is updated in the latest version: 2.0.x-dev. Moving to RTBC