SharePoint / SharePoint/sp-dev-docs
Debugging field customizer not working in "new" SPO lists
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@Ashlesha-MSFT is already working on this.
Since Apr 28, 2025.
area:spfx
area:spfx-extensions
Needs: Triage :mag:
sharepoint-developer-support
type:bug-confirmed
type:bug-suspected
- Dominant language
- PowerShell
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Description
Target SharePoint environment
SharePoint Online
What SharePoint development model, framework, SDK or API is this about?
💥 SharePoint Framework
Developer environment
Windows
What browser(s) / client(s) have you tested
- 💥 Internet Explorer
- 💥 Microsoft Edge
- 💥 Google Chrome
- 💥 FireFox
- 💥 Safari
- mobile (iOS/iPadOS)
- mobile (Android)
- not applicable
- other (enter in the "Additional environment details" area below)
Additional environment details
- browser version 127.0.2651.86
- SPFx version 1.19.0
- Node.js version 18.20.1
- Using WSL 2 on Windows 11
Describe the bug / error
On my dev tenant I got a new SharePoint list design.
I can not debug my SPFx Field Customizer with this new design. The component is loading (I checked with CTRL+F12 in SPO and I can see the manifest and js files loading in the terminal) but it is never executed.
On my live environment with the old list design everything is working as expected.
Steps to reproduce
- Create an SPFx solution with a Field Customizer
- Change the serve.json to the correct field name (in my case its "Percent")
- Run it on a Tenant with this new list design
Expected behavior
The list should render the field like this:
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Assessment
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