The mystery to the HUD UI

I made a custom UI that works but it has no functionality, but while I was making my custom UI the second image appeared while I was doing testing it had all the functionality I needed for my game so, I wanted to use that. After deleting my custom, The second image disappeared as well. I recreated the UI and it came back but sometimes it would appeared and on restart it would not appear. Okay where is this UI being pulled from? As I don’t know what settings are triggering it and it only seems to work when I try to make a custom UI.

Appears every time the game is loaded

Sometimes it appears and sometimes it doesn’t