Engine and Engine Dispatch 24.32.489

Released 2026-08-26

Fixes system hangup in a database-per-tenant architecture when "UseSystemDatabaseForTenantSettings" is set to "false".
[CMI5] - Resolves launch failure when the CMI5 package's manifest includes non-JSON "launchParameters".
Fixes a bug that was preventing access to an LTI tool's deep linking content selection URL when using Engine as an LTI 1.3 platform to import content via deep linking.
[Upgrade] - Fixes error when reprocessing Substatements.
[Upgrade] - Fixes fatal debug logging error when using the "BatchSizeOverrides" setting.

Removed gathering metrics for JSON Serialization/Deserialization.
Memory usage improvements for environments with a high number (hundreds of thousands or even millions) of tenants.
The "launchHistoryId" is now surfaced in "CourseLaunched" and "RegistrationChanged" subscription notification payloads.
[LTI] - Adds the value configured as LtiPlatformIssuer, the Platform Issuer Identifier, as a trusted audience when validating the audience (aud) claim in the client assertion token for LTI access token requests to Engine's /token endpoint.
[LTI 1.3] - Adds locale as top level claim and "launch_presentation" claim member.
[Upgrade] - Non-strict validation for .9 statements during statements migration.

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