On Android apps, when you change a font size within your code, the border is not resized. Try this app on your computer and your device to see what I mean.

This is an issue because if you want to use strings on different sized screens, the border where the string should display is not calculated correctly, and on a smaller screen you run the risk of your text running off the display on smaller sized screens.

Note: I am not using "Resize display to fill window size" in the app I am working on, but this the file I'm posting uses it for display purposes. For a professional looking non-pixelated or down-sized-looking app, I am manually resizing all my objects and texts in my app.