[Geoserver-devel] [jira] Created: (GEOS-2345) Tiles rendering off from intended bounds?

Tiles rendering off from intended bounds?
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                 Key: GEOS-2345
                 URL: http://jira.codehaus.org/browse/GEOS-2345
             Project: GeoServer
          Issue Type: Bug
          Components: WMS
    Affects Versions: 1.7.0-RC4
            Reporter: Sebastian Benthall
            Assignee: Andrea Aime

Not sure how to reproduce this bug generally, but here's what I know:

I've been hitting http://geo.openplans.org/geoserver/gwc/service/wms with WMS requests for topp:nyc_background.

I'm getting tiles back, but at some resolutions things appear to be a little "off". I can't tell if they have been rendered with a slightly displaced bounding box, or a slightly larger one, or what. But I know that:
     (a) when I overlay a vector layer on top of the map using OpenLayers, the relative positions of those vector features and the rendered features of the WMS layer change as I zoom in and out, and
     (b) when I point the base layer at a different set of cached layers derived from the same data ("http://artois.openplans.org/tc/tilecache.py) I don't get the same problem.

I cleared geo's GWC cache for the topp:nyc_background layer, and it did not solve the problem.

An example of a URL that I think is giving me a bad tile is:

{code}
http://geo.openplans.org/geoserver/gwc/service/wms?LAYERS=topp%3Anyc_background&BGCOLOR=0xECECC6&FORMAT=image%2Fpng8&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&SRS=EPSG%3A900913&BBOX=-8232267.945167576,4979996.602257023,-8229821.960262888,4982442.5871617105&WIDTH=256&HEIGHT=256
{code}

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