Comment by cheeseomlit

For me the real headaches emerged when I started writing [Tool] classes in C# for scripting within the editor itself. I don't know enough about the lower level nitty-gritty stuff to explain it, but I basically had to close and re-open the editor every time I recompiled. It had something to do with not being able to load assemblies, for example if I had a Tool script which referenced a sqlite library. There were also some concerning instances of Exported properties losing their saved values, though in that case they can at least be restored from previous versions of the .tscn file from version control