THE BUG IS BEING HANDLED! 0 to edit, use the sliders to see all the tiles. When you scroll the mouse to the palette side, the arrow keys control the palette, so it scrolls the palette, not the player. Arrow keys/WASD to walk when the mouse is not on the palette. I will release the real version in a while so stay tuned!
Thanks to @griffpatch for the Scratch RPG tutorial and RPG assets. Check it out! :D