Lovelace View Arrows

After rebuilding my dashboard, I have created a bunch of subviews for the rooms in my house. Since doing this, I now have these arrows appearing when I open the app. Tapping the arrows makes them disappear. I’m see this in the mobile app and in Safari on my Mac.

Just wondering if anyone else has seen this, what the reason for it is, and if there is any way to fix/stop it.