I have 4 instances (app) running node-red on different folders on the same pc.
When I update to node-red 3.0, I was surprised because some apps doesn´t work well. The dark mode disapear (doesn´t responde) and multiple nodes do not apear on the ui. On layout nodes programming is everithing the same.
Can someone explain why this happens ?
Is there a best way to have multiple instances of node-red running on same pc?
Which "apps" are these? What did you see? Did you add issues to the repositories so they can be fixed?
What was the exact process you used for updating?
What was your previous version of node-red?
Not without details I'm afraid. However, if you had asked for advice before upgrading we could have guided you on the best path to avoid issues.
No, but you may benefit from something like flowforge which is designed for running and managing multiple instances of node-red (full disclosure: I work for flowforge alongside one of the original creators of node-red)