I have 2 projects: project1 and project2.
When I'm working with project 2, dashboard of the project 1 is not reachable or active. Is there a way to view dashboard of project 1 while working with project 2 which also has a dashboard?
As was answered in the issue you raised.
No, you can only load one flow/project at a time on a single instance of Node-RED, this means you can not edit project 2 while running project 1