The change in the way uploading images works has been applied to the whole website, it's not an exclusive feature of the generator.
The sprites uploaded through the generator will be deleted periodically, but uploading them is faster and less buggy. The way images are uploaded has changed.Fixed the bug that made backgrounds a lighter shade of black when uploading transparent pictures to use in the generator.The "check for updates" button works as expected again.
This update fixes bugs derivated from the April 2021 update.
Fixed the bug that duplicated the "none" option in the universe list and made it not work after selecting it a second time.You can follow the development status on Trello.