I have many maps made with ArcMap for desktop.
In the picture below I have a box with text and an arrow pointing to a location. I don't remember what I used to make this but I think it is made with the "Draw" toolbar and it is a rectangle with a separate "line". The line has an arrow on one end. Some of these are similar except without the arrow. I had many of these on my maps and now they don't show on the maps. I don't know for sure if it is related but this seemed to happen after I upgraded from 10.6 to 10.7 They don't show at any zoom level or data view / layout view. Anybody have any ideas how to get these back? Maybe they are in a style file? Are they considered annotations? Let me know if you need any more information or if you want me to check specific things.