preload doesn't work in gorm 1.31.1 works in 1.31.0

[arraytad]

GORM Playground Link

I don't understand how to use the playground, but I added a self contained program that reproduces it.

go-gorm/playground#840

Description

When building against 1.31.0, Preload for this testcase works, but when building against 1.31.1 it does not

Works correctly with gorm v1.31.0

Note User and Location are both non-nil as expected

bigbaby:gorm-preload-bug tadhunt$ grep gorm.io go.mod
	gorm.io/gorm v1.31.0
bigbaby:gorm-preload-bug tadhunt$ make
go mod tidy
go vet
staticcheck
go build -o gorm-bug
bigbaby:gorm-preload-bug tadhunt$ ./gorm-bug

=== Loading shift with Preload ===

Shift ID: shift-001
Shift UserID: 1001
Shift LocationID: 2001
User: Alice Smith (ID: 1001)
Location: Office A (ID: 2001)

Fails with gorm v1.31.1

bigbaby:gorm-preload-bug tadhunt$ grep gorm.io go.mod
	gorm.io/gorm v1.31.1
bigbaby:gorm-preload-bug tadhunt$ make
go mod tidy
go vet
staticcheck
go build -o gorm-bug
bigbaby:gorm-preload-bug tadhunt$ ./gorm-bug

=== Loading shift with Preload ===

Shift ID: shift-001
Shift UserID: 1001
Shift LocationID: 2001
ERROR: User is nil - Preload failed!