Topo Screen not refreshing after pan

Hi
1) go to topographical map
2) long tap "-" to enter panning mode
3) Pan the map 6 or more times to, say, left
4) long tap "-" again
upon return, most of the times, screen is not correctly redraw leaving the backgoung map partialy grey or even totally grey.
see attached screen
Note: "Topographical map source" is mispelled when long tapping map.
cheers
bitbrusher
1) go to topographical map
2) long tap "-" to enter panning mode
3) Pan the map 6 or more times to, say, left
4) long tap "-" again
upon return, most of the times, screen is not correctly redraw leaving the backgoung map partialy grey or even totally grey.
see attached screen
Note: "Topographical map source" is mispelled when long tapping map.
cheers
bitbrusher