I'm having the same issue. None of this helped. In addition to zoom, sometimes just flying in the right direction helps, but nothing I've tried will let me see the map: only the HUD and menu are consistently visible and everything else will be black.
This was happening to me exactly as you describe.
I'm running at 4K borderless mode, so i had turned down my graphics setting in favor of a smooth frame rate.
Temporarily changing to windowed mode, and setting the graphics quality to high resolved the issue, i hope this works for others that encounter it.
