[Talk-de] Avoid taging with both natural=water + waterway=riverbank

[Richard]

Hi,

I have fixed this in a few places in the wiki:

the combination of natural=water + waterway=riverbank for a single object
is pretty dangerous and should be avoided because it will cause subtle
and very hard to find rendering problems.

The problem I hit was where someone placed a natural=water on some parent
relation whereas the riverbanks were multipolygons of waterway=riverbank.
The islands that were correctly mapped using multipolygons were flooded
by the inherited natural=water.

Similarly the advice which was in wiki to tag the multipolygons with 
natural=water and the ways with an additional waterway=riverbank might
cause the same problem.

Richard