A big issue- – Infinite Painter Review

I love this app, I really really do. It’s such a good app compared to a lot of other art apps that I have tried. But there’s one huge issue: whenever I save a project to the photos on my phone or whenever I want to upload the project to anything such as Google Classroom, export the project, etc. the background of my project goes from white to black when I click on it after I’ve saved it to my photos or uploaded/exported it. I don’t know how to fix it and it is really getting annoying. I am not sure if it’s a bug or what. But if it is a bug, I would love for it to get fixed because this is a really good application for me to do things for my Art assignments. Please get this fixed or tell me how to fix it if it’s some sort of feature(that I can hopefully turn off).
Review by Smol Sloth on Infinite Painter.