Issue
When I access any of my builds, I see the button Rebuild showing twice in the UI, as shown in the following screenshot.

Resolution
This behavior is caused by the Rebuilder plugin. As soon as you uninstall it from your instance, this issue is gone.
Tested product/plugin versions
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CloudBees CI on modern cloud platforms - managed controller 2.462.3.3
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Rebuilder plugin - 332.va_1ee476d8f6d
This article is part of our Knowledge Base and is provided for guidance-based purposes only. The solutions or workarounds described here are not officially supported by CloudBees and may not be applicable in all environments. Use at your own discretion, and test changes in a safe environment before applying them to production systems.