Is there a better ticketing system to check PostgreSQL issues?
There is no alternative.

Many people would like to have a bug tracker, and there are regularly spirited attempts to introduce one. They usually fail because of lack of buy-in by the community.


One of the problems is that it must be possible to continue using e-mail as an interface.
The other problem is that PostgreSQL does not want to become dependent on third-party tools.


PostgreSQL has been here for over twenty years, and we want to stay around for more. Tools come and go, e-mail will remain.

The archives offer a pretty good search functionality.

For example, if you want to search for previous discussions about bug trackers, this search on the Hackers list will bring many results.