Change PowerPoint Slide Size, and You Lose Fonts, Backgrounds, and Colors!
A few days ago, I needed to demo some animation effects in a training class. I happened to open one of my older presentation decks, and this one was probably created using PowerPoint 2002 or 2003. When I selected the Slide Size option to change the slides to widescreen, I saw a poor transformation of my existing slides. I ended losing all colors, fonts, and backgrounds. Even the text alignment differed!
I put up a blog post about this issue with screenshots and a workaround at https://notes.indezine.com/2018/01/change-slide-size-lose-fonts-backgrounds-colors.html
Microsoft please fix this feature so we don't have to use this workaround!