Neo4J Bloom Search "Sorry, we couldn't find any results for this search."

Hi,
I have a desktop installation, and I am working on a proof of concept locally. I define Schema and import data from CSV. I can see all in Bloom. But searching for nodes does not work constantly. It looks as if it works by chance. I go to work, start the DB and can see all the nodes and relationships in Bloom, but can't search for nodes, the other time, it works. Am I doing something wrong?
Best