DP3 doesn't really have much issue tracking, but some clear issues are:
- web version requires consistent internet connection to work correctly
- handling of models isn't optimal, it could be done with a shader instead of creating separate models for differently angled models for a big performance boost
- I'm aware of some issues on Mac computers, but as I don't have any Mac around I can't debug them
- Keybind customization doesn't exist in any capacity, input system overall could use a rework
When it comes to features, there are only two big ones I can think of - bridges and caves. I did some work on bridges and they are implemented in DP2 in a way which allows to copy a lot of code from it to DP3, but they are still very time-consuming feature to implement.