You can if you wish delete the files it downloads, it loads them into locallow appdata folder on windows under hexhog.
The issue with the UI was that making a new tile had a much farther allowance to show UI, while editing a tile was set to require you be significantly closer. This is being adjusted.
Edit: This has been adjusted to be the same distance, however I dislike how it feels and am considering reverting since you now are constantly getting the "what do you want to do with this tile" the moment you add one. Compared to before where you had to zoom in to do so.