Symbol disappearing when zooming in/out

I am trying to make a simple animation which consists of a background with a cursor. The cursor is just a png image of a cursor which I've converted into a symbol.

The problem is, that the cursor (symbol) disappears when i'm dragging it into certain parts of the frame, and when i'm zooming in and out. I thought that it was just a visual bug, but the cursor doesn't even show up in the animation. 

Here is a short clip to demonstrate my problem: