Query Editor doesn't assign active database to existing query tabs

Steps to reproduce:

1. Open a Query Editor worksheet by clicking the "Run Queries" card
2. Add another query tab.
3. In the Query Editor worksheet, click the connection button in the query tab toolbar which is illustrated with a "server" icon and server name label.
4. Fill out all required fields, write `mysql` in the "database" field and click "Connect"

Expect behavior:
Both query tabs have `mysql` as the active schema

Actual:
Only the first query tab has `mysql` as the active schema,