To reproduce:

1. Create a kanban (with any tracker)
2. Modify the kanban tracker. Add a radio button field bound to user groups (for example "Project Members", "Contributors", "Integrators", etc. Choose at least one "Dynamic user group" as possible value like "Project Members", "Project Administrators".
3. Go to the kanban and click on "Add a new <tracker name>" button
4. The artifact modal will open and there will be an error like:

kanban-e0306fe61949763b5a63.js:285 Error: [$parse:syntax] Syntax Error: Token '_3' is an unexpected token at column 4 of the expression [321_3] starting at [_3].

If you select a user group in the radio button field and submit the modal, the value is not saved.

Bug identified while building a cypress automated test for request #21413