How to reproduce:

• Create a plugin to use Contents Tree plugin (see documentation).
• In this plugin, create a button to add a linked content to the selected one
• In backoffice, open the tree tool
• select a parent node
• Click on the add button
• The title of the dialog box says that you will create a content of type of the selected node but this is wrong: You will create a content of type that is configured on the metadata of the selected content

Example:

In my configuration, I have contents of type "Autre". A content of type "Autre" has a metadata linkContents that is multiple, of type content, without type restriction.

So when I click on my add button, I don't know what type of content I will create. I choose this type in the dialog box. But the dialog box title says that I will create a content of type "Autre" (see capture). This is wrong