Font size changing between slides but built into slide master

Hi Amanda,

Thanks for the video!

Based on the video, the text is either losing formatting or something else is changing the font size/weight. 

It would be much easier for the community to help if you could share a copy of your project file for testing. Would you be willing to share a copy of your project file here or in private by opening a support case? We'll delete it when we're done!