There is a Mage2.PRO issue tracker located?

Each Mage2.PRO extension has a separate issue tracker in the code repository.
Please use these issue trackers only for the low-level issues (e.g. if you have got a PHP error/exception with a backtrace on the screen).
Post all the other issues on the forum.

An example of an extension’s (Stripe) issue tracker:

The code repositories for Stripe and other payment extensions have been moved to GitHub:
So the issue trackers for these extensions are on GitHub too.