I often find the documentation insufficient or non existing, making it very time consuming to develop to Unreal Engine 4. Much time goes into guessing how things work and reading a lot of source code to figure out how to use the engine. Sometimes you find things not even mentioned in the documentation when going through the source. Also things like 5+ ways to change level doesn’t make using the engine any easier. The code isn’t written in such a way that it’s self-documenting in its current state.
Therefore I would find it helpful if the staff would spend more time at answerhub. Sometimes it can take several months to get an answer for a question. Or sometimes just nobody seems to know, or at least no one that’s willing to share. There are also some hacks that are spread by community users. This will resulting in hacky solutions and by time buggy products from Unreal Engine. I think this issue should be taken very seriously since it may not only be a problem for the engine itself but also its users. Improving the documentation will decrease development times and resulting in better overall quality.
More documentation is needed but not in the editor. This is only an annoying feature since most people doesn’t need to be reminded of how to use the editor after updating the engine.