Mojang used to use PocketMine for internal testing, but they no longer need to use it since BDS is out.
Yes I have some good news there Is no debug because it needs to be done to protect us from getting hacked so you can email Mojang to maybe make a deal with you to give you the debug symbols but I'm not 100% it will turn out.
More than once we've had people come and make a small contribution, and then expect the earth as a result. The fact is that I still don't have the resources I need, and you are lucky that a 1.13 update was shipped at all given the circumstances.