The original Node-RED Dashboard is based on Angular v1, which is no longer maintained. Although small patches have been and will continue to be applied on a "best can do" basis, there will be no major feature upgrades. The lack of ongoing maintenance and updates has the potential to lead to underlying security breakages, a risk we are not comfortable taking. We have recognized the need to innovate and adapt, which is why we are creating a completely new project to replace the existing Node-RED Dashboard.

https://flowfuse.com/blog/2023/06/dashboard-announcement/