Known limitations - hippogamesunity/PixelStudioHub GitHub Wiki

In Pixel Studio each Layer has its' own History. In most cases it's very useful. But when you merge or delete layers their history is erased. Such actions can't be undo. Please be careful.
When sharing GIF, not all applications from the list can handle it. For example, Gmail sends GIF as expected, but Facebook converts it to a static image.
When deleting iOS app, all files will be deleted. Only for iOS! Make a backup!