Wow, I'm having the same issue right now. It seems to be related to having multiple replicas in the Kubernetes cluster. I've scaled it down to a single replica and that seems to fix it for now. As you can see this is clearly an early alpha version. Thanks for notifying me about this issue and my apologies for the inconvenience.

You shouldn't be able to see groups and databases of others. Can you elaborate a little bit about what you are seeing that is not supposed to be there? Or maybe you can send me a screenshot at bram [at] baserow [dot] io?