YouTube’s testing out a handy new option for Shorts editing, which will highlight where any elements that you add to a clip, like captions and stickers, are placed relative to the actual Shorts UI, and what may interfere with your content on-screen.

As you can see in this example, this new process will show you where, say, the side of the screen is, and whether your placement is encroaching on the visual display in the app, or where the function buttons and profile icons will be, relative to your placement. As you move your addition around the screen, new parameter shadows will highlight these potential display conflicts, helping to ensure you stay between the lines, so to speak.
As explained by YouTube:
“The goal…