I think this is just a misunderstanding about File/Open option. This will just open the repo, it does not add it as a bookmark.
To do that open the 'New Repo' tab using the + in the tab header. Then select the 'Add' option and open your repo in there. You can add a bookmark name and optionally folder it.
After adding it there you will be able to search for it in the 'Local' list.
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