At first look in your stylefile polygons and see how  natural=water is converted to garmintyp, I prefer 0x3c, resolution 18. Second look in your typfile, if 0x3c is renderd and if the DrawPriority in typfile is high enouf. Maybee 0x3c exist, but in a low layer, which is overwriting with the other layers.
thomas

Am 10.09.2018 um 23:18 schrieb Enrico Liboni:

Folks, since sometime Lake Garda in Italy is not rendered correctly. I did not report this a few months ago since I was using an old version of mkgmap but I'm now using very latest one and fresh geofabrik pbf but the problem remains. At a first glance OSM data seems fine:

https://www.openstreetmap.org/relation/8569

Any idea?  Attached screenshot from my Garmin device, the lake should be inside the ugly black line - note other smaller lakes are rendered correctly. Lake name is also missed. I am using a custom style but I don't think that can be the cause-

Thanks,

Enrico

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