UUM-139722

Known issue in 6000.5.0b6

Mentioned in 8 release notes.

Listed as a known issue in 6000.5.0b6 (Apr 30, 2026); no fix in indexed releases yet.

Open on Unity Issue Tracker
VersionSectionRiskImpactNote
6000.5.0b6Known IssuesBlockerKnown issueCrash on "core::base_hash_set" when using nested [SerializeReference] fields in List<T> structures
6000.0.74f1Known IssuesBlockerKnown issueCrash on "core::base_hash_set" when using nested [SerializeReference] fields in List<T> structures
6000.4.5f1Known IssuesBlockerKnown issueCrash on "core::base_hash_set" when using nested [SerializeReference] fields in List<T> structures
6000.4.4f1Known IssuesBlockerKnown issueCrash on "core::base_hash_set" when using nested [SerializeReference] fields in List<T> structures
6000.3.14f1Known IssuesBlockerKnown issueCrash on "core::base_hash_set" when using nested [SerializeReference] fields in List<T> structures
6000.5.0b4Known IssuesBlockerKnown issueCrash on "core::base_hash_set" when using nested [SerializeReference] fields in List<T> structures
6000.4.3f1Known IssuesBlockerKnown issueCrash on "core::base_hash_set" when using nested [SerializeReference] fields in List<T> structures
6000.0.73f1Known IssuesBlockerKnown issueCrash on "core::base_hash_set" when using nested [SerializeReference] fields in List<T> structures

Pick your Unity version

Unity Releases compares releases against the version your project is on. Picking it now keeps Compare versions focused on what changes between where you are and where you might be going.