Why starting with transparent background we get a one layer named Layer 1 and with white | black background we get a layer named Background ? Is that initial selection a handy shortcut (that can be easily changed after i start working) or it establises something in my sprite that cant be changed ?
Also can we set the default folder where exported files are saved ?
Picking a background color makes Aseprite behave somewhat like MS Paint and other art programs that don’t use alpha channels. The background layer is special in that it cannot be erased nor can anything be placed under it, and any attempt to erase it simply replaces it with your current background color. It’s one of those “Very niche use case” features that really only exist for technical reasons, both in and outside of Aseprite.
And no, you can’t set the default folder, yeah it’s annoying.