Hello everybody,we just discovered a bug in pgAdmin 4. When closing the Tab in Firefox, a started transaction stays opened. It can only be killed via a pg_cancel_backend. We would expect the transaction to be rolled back instead.
Steps to reproduce: 1. Open a transaction in the query tool 2. close Browser Tab 3. Use pg_stat_activity to verify that process is idle in transaction Versions: Windows 10 1803 Firefox 67.0.4 (64-Bit) pgAdmin 4.10 PostgreSQL server 9.5.4
