EF Core 11 introduces partial property loading: SqlVector<T> properties are excluded from SELECT by default, since vectors are large and rarely need to be read back after ingestion.

vector-search.md

• Added a [!NOTE] noting that prior to EF Core 11, vector properties were always loaded like any other property
• Updated SQL snippets in VECTOR_SEARCH() and hybrid search examples to reflect vector column no longer appearing in SELECT

whatsnew.md

• Added brief "Vector properties not loaded by default" entry under the SQL Server section with a minimal code example showing that vector columns are excluded from entity projections but can still be used in filters and orderings

breaking-changes.md

• Added a low-impact breaking change entry for SqlVector<T> properties no longer being loaded by default (tracking issue #37279)
• Mitigations section notes that an opt-in mechanism will be introduced later in the EF Core 11 release, and documents explicit projection as a workaround in the meantime

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