Uncaught TypeError: rowHandler.parentChange is not a function

Created on 14 August 2025, 2 days ago

Problem/Motivation

When creating a new fieldgroup and trying to drag it from the disabled section into the content section its not possible to drop it anywhere.

Theres a JS error in the console:

Uncaught TypeError: rowHandler.parentChange is not a function
onDrop x/core/modules/field_ui/js/field_ui.js?v=11.2.3:230
dropRow x/themes/contrib/gin/js/overrides/tabledrag.js?v=11.2.3:939
tableDrag x/themes/contrib/gin/js/overrides/tabledrag.js?v=11.2.3:311

Steps to reproduce

1. Add a new field gruop (HTML-Element in my case)
2. Try to drag it from the disabled into the content section
3. Leave LMB => The dragged item still follows the mouse

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes

🐛 Bug report
Status

Active

Version

4.0

Component

Miscellaneous

Created by

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