Service beans not auto-injecting into other service beans without @Autowired

[whorvath2]

Expected Behavior

Service beans that depend on other service beans shouldn't have to add @Autowired to their fields to have them injected (unless that's intended behavior; I checked the upgrade guidance this time but couldn't find anything.)

Actual Behaviour

I have a collection of service beans, some of which have other service beans as fields. The field beans were auto-injected into their enclosing services in M3, but aren't doing so in M5 (i.e., the field values are null), resulting in InvocationTargetExceptions when those field's methods are called. However, I found that adding @Autowired to the fields forces the injections. For example, here's a before:

@Service
class LicenseService {

    InvoiceService invoiceService
    ProjectUserService projectUserService
    ProjectService projectService

And here's what it looks like now, which allows the licenseService to work when (e.g.) it uses its invoiceService instance:

@Service
class LicenseService {

    @Autowired
    InvoiceService invoiceService
    @Autowired
    ProjectUserService projectUserService
    @Autowired
    ProjectService projectService

Steps To Reproduce

No response

Environment Information

build.gradle

---

Gradle 9.5.1

Build time: 2026-05-12 13:19:42 UTC
Revision: fd78213f09782e62ca4957f9cfd3d90c6c3f1767

Kotlin: 2.3.20
Groovy: 4.0.29
Ant: Apache Ant(TM) version 1.10.15 compiled on August 25 2024
Launcher JVM: 25.0.3 (Amazon.com Inc. 25.0.3+9-LTS)
Daemon JVM: /Users/bhorvath/.sdkman/candidates/java/25.0.3-amzn (no Daemon JVM specified, using current Java home)
OS: Mac OS X 26.6.2 aarch64

| Grails Version: 8.0.0-M5
| JVM Version: 25.0.3

Example Application

No response

Version

8.0.0-M5

[jdaugherty]

Are you using the @Service, as in the annotation for Data Services?

[jdaugherty]

@borinquenkid if these are data services, do you mind taking a look?