Content Approval = Yes -> Documents no longer show up in Search!!
When Content Approval is activated for a Document Library in Versioning Settings, documents in this library no longer show up in search results. This is very inconvenient because documents that are in a draft, pending or even in an approved state cannot be found with search, both at the library and at site level.
Also, there seems to be a bug: when switching back from -Yes- to -No- in the setting of "Require content approval for submitted items?", the setting "Who should see draft items in this document library?" in "Draft Item Security", continues to allow the option of "Only users who can edit items".
In a new library which hasn't been changed the setting of "Require content approval...", only the option of "Any user who can read items" is available in "Draft Item Security".
Please allow the documents in a library that has Content Approval setting on, to be searchable.