I imported some blocks from another project via backpack, and the Project Bucket for all my FireBaseDataBase components (which previously were empty) changed to the name of the other project in the design screen.
Try setting ProjectBucket in the designer empty before import ?
That's the way it was.
After the import, things began to behave improperly and I discovered the problem, Which solved by setting the project buckets empty again in the designer.
See the post of ewpatton in this other topic:
I did see that