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# Vercel Rolling Releases UI error when switching assignment methods

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Victor Hermes (@victorhas) · 2026-03-15

## Problem
I encountered a persistent UI error when configuring **Rolling Releases**. The error triggers specifically when switching between assignment methods within a newly added stage.

## Steps to Reproduce

1. Navigate to the **Rolling Releases** configuration (using default settings).
2. Click on `Automatically`.
3. Click on `Add Stage`.
4. Change the assignment method to `Manually`.
5. Immediately change the assignment method back to `Automatically`.