Can't add fields to another plugin's object

[C-Duv]

Code of Conduct

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Is there an existing issue for this?

• I have searched the existing issues

GLPI Version

11.0.5

Plugin version

1.23.4

Bug description

I can't add field to the connection objects (from Connections plugin): It's not listed in the "Associated item type" field.

Relevant log output

Page URL

https://glpi.example.com/plugins/fields/front/container.form.php

Steps To reproduce

1. Go to Setup > Additional fields (/plugins/fields/front/container.php)
2. Click the "Add" button (/plugins/fields/front/container.form.php)
3. The "Associated item type" field is not offering the connections object.

Your GLPI setup information

No response

Anything else?

I do have the Connections's dropdowns: Type of Connections, Rates and Guaranteed Rates.