Theme Widgets - Can't update fields with constants

[Wojtek-G]

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Current Behavior

You can’t update the constants after creating the theme widget style from an existing widget that has constants used as values in the style.

Expected Behavior

You can add/edit constants as the theme widget styles fields values.

Steps to Reproduce

1. Create a new project.
2. Create a new constant "test1", make it a double, set value 24 for example.
3. Create a new container.
4. Set border width of the container to constant "test1".
5. Save the container styles new theme widget style "testtheme1".
6. Go to the style panel, check the theme widget style "testtheme1" and try to edit the border width.

Reproducible from Blank

• The steps to reproduce above start from a blank project.

Bug Report Code (Required)

IT4kz8r134t2pbxZ0KrbbexKhjk4HEA+TL03pu0bFEggGLbrBIYMafTOTFhWTteoY3NbKEWKhjge//D3vuDxGu0oHEiCQJxgz5FidA7hQka/aoSsPLmWZXclROxYIG6e3MCo2yNCJtZ1R04s1zmUGPK8YAzYQL37Zwh9f6PHaOI=

Visual documentation

Environment

- FlutterFlow version: FlutterFlow v5.3.5 released March 27, 2025
Flutter version is 3.27.3
- Platform: macOS
- Browser name and version: Chrome 134.0.6998.166 (arm64)
- Operating system and version affected: macOS 15.3.2 (24D81)

Additional Information

There is also another a bug regarding the libraries design system when have widget styles with constants (another issue reported).

[Alezanello]

Thank you so much for catching this! It looks like when a Theme Style is created from a widget that includes a variable, the value can't be modified in the Theme Editor. I’ll go ahead and pass this along to the engineering team for further review.