They're on Github but pretty swamped atm.

At the moment we are urgently working to solve major issues, such as optimizing slow database queries, ripping out the inefficient websocket API, and fixing a major security vulnerability (big thanks to deadcade). In addition we suddenly have to manage dozens of pull requests. To give us time to work on these priorities, it would be very beneficial if users could refrain from interacting with issue trackers when possible. Before opening an issue, make sure that it hasn’t been reported before. And when writing comments, make sure that they actually contribute to solving the issue at hand. Generally it is better to move discussions to Lemmy if possible.