Every time I do any edits to a sprite or I choose a different editing tool for the sprite, my screen flashes white.
Huh that sounds really weird. If you could send a video of it happening and open the console that’d help a lot.
I think you can bring up the console with Command F13, or you can just click the menu to the right of the search bar, press More Tools (or similarly named), then click Web Developer Tools (or a similar name)
if you’re on a windows device, you can right click on the screen, and then choose the “inspect” option all the way at the bottom of the pop-up menu.
Should look like this: