Updating an element within an array of embedded schema behaves differently on Realm 12 and 11

[andreyukD]

How frequently does the bug occur?

Always

Description

Realm 11.9.0 and 12.0.0 have different behavior when updating an element in an array within an embedded schema. If a change is desired, how can an element be updated in this case?

Stacktrace & log output

No response

Can you reproduce the bug?

Always

Reproduction Steps

I've created an example to show the difference between Realm 12.0.0 and 11.9.0.

https://github.com/andreyukD/reproduce-realmjs-issue

Starting point was npx create-expo-app MyAwesomeRealmApp --template @realm/expo-template

I've added a new field items in Task schema

Commit with v12 andreyukD/reproduce-realmjs-issue@897316a

Branch with v11, code remained unchanged, only the Realm version was updated https://github.com/andreyukD/reproduce-realmjs-issue/commits/v11

v11-9-0.mp4

v12-0-0.mp4

Version

12.0.0 / 11.9.0

What services are you using?

Local Database only

Are you using encryption?

No

Platform OS and version(s)

macOS 14.0

Build environment

Which debugger for React Native: ..

Cocoapods version

No response

[kneth]

@andreyukD Thank you for the bug report and the code to reproduce it. We need to investigate, and will get back to you.

[kneth]

@andreyukD We have a fix in #6242. Thank you for bringing it to our attention ❤️

[andreyukD]

@kneth Thanks for the quick response and fix! I'll test it out once the fix has been merged.

[andreyukD]

Can confirm that bug was fixed in Realm v12.3.1
andreyukD/reproduce-realmjs-issue@33777db