Oddly Specific Border Bug

1&2. Adobe Express for Education on MacOS Safari

3. Will need to get permission from presenter to be able to share link, will update if I can.

4. I was doing an in person ACE course, and the template provided by the presenter had an issue specificaly with the "heart" shape. I wanted to add a border but no matter how much I would change the color or thickness, it would not add the border.

I'm not sure if this is a platform thing or the specific file issue, but I just wanted to bring it to attention if it is a bug.

I tried to recreate it in a brand new file it is not recreatable from a fresh start, it has only happened specifically in the template I was provided.