Unable to show map

HI, I use a map in my BI Report (the Microsoft Map, usually in the first column, 4 rows down)

And while working in desktop, it works fine and I can see it.  

But sometimes when published, the map isn't visible, and sometimes when I save the report, close it and reopen it, the map dissappears (luckily I back it up the night before).

When does the map, of all the visuals, seem to be the only one that does this?
My report currently sits at a size of 184,211 KB and is using the latest (december version), and is in import mode.

Any suggestion is appreciated.