What happened?

Description

I have just updated from Craft 4.12.6.1 to 4.13.7 and the child entries are no longer loading data from my GraphQL query.

An example of the query below:

And the related entry listing where the child entries are still present and enabled

This query has been working successfully for a number of years now. The only change is the update of Craft as well as a number of other plugins which I wouldn't expect to have caused the issue.

Full list of updated plugins below:

"craftcms/cms" - "4.12.6.1" > "4.13.7"
"spicyweb/craft-neo" - "4.2.16" > "4.2.23"
"nystudio107/craft-imageoptimize" - "4.0.9" > "4.0.10"
"craftcms/commerce" - "4.6.13" > "4.7.2"
"craftcms/commerce-stripe" - "4.1.5" > "4.1.5.1"
"nystudio107/craft-retour" - "4.1.19" > "4.1.20"
"nystudio107/craft-seomatic" - "4.1.4" > "4.1.8"
"verbb/events" - "2.0.6" > "2.0.7"
"craftcms/ckeditor" - "3.9.0" > "3.10.0"

Craft CMS version

4.13.7

PHP version

8.0.5

Operating system and version

Linux 5.15.60-zfs.2.1.5

Database type and version

MySQL 57

Image driver and version

GD 8.0.5

Installed plugins and versions

"require": {
    "craftcms/cms": "4.13.7",
    "vlucas/phpdotenv": "^5.4.0",
    "craftcms/contact-form": "3.1.0",
    "craftcms/contact-form-honeypot": "2.1.0",
    "verbb/super-table": "3.0.15",
    "spicyweb/craft-neo": "4.2.23",
    "nystudio107/craft-imageoptimize": "4.0.10",
    "hybridinteractive/craft-contact-form-extensions": "4.2.2",
    "craftcms/commerce": "4.7.2",
    "craftcms/commerce-stripe": "4.1.5.1",
    "craftcms/digital-products": "3.2.3",
    "kreait/firebase-php": "^5.0",
    "nystudio107/craft-code-field": "4.0.12",
    "nystudio107/craft-retour": "4.1.20",
    "nystudio107/craft-seomatic": "4.1.8",
    "sebastianlenz/linkfield": "^2.1",
    "verbb/events": "2.0.7",
    "craftpulse/craft-colour-swatches": "4.5.3",
    "craftcms/ckeditor": "3.10.0"
  }