Ralf Kleineisel wrote: 
Felix Hartmann wrote:

  
yes, simply set background polygon 0x4b to a color (if using maptk watch 
out to set one pixel to something else, because usually if you go for a 
single color only maptk will put second color transparent and 
performance sucks, this is a bug in maptk, the online typfile editor is 
fine in this regard).
I like white (best contrast).
    

That's what I do but when I zoom out to 2 km or more the white
background disappears. Do you know of a way to change that?
No, maybe you could check if your last shown polygon disappears at the same level as set in polygons style-file (is it 2km Mapsource or GPS, I assume GPS?)
Maybe putting a polygon into resolution=16 (i.e. take water=yes & name=Bodensee (if rendering Germany)) and see if that helps.

Report back if you can see any way to change the behaviour (other than changing mapdetail in gps to more/most)
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