[Geoserver-users] Problem with Open Layer in layer preview

Dear all,

I’m using on a Soft layer virtual machine with Ubuntu 14.04.4 LTS, GeoServer 2.8.4, with Java version:

1.7.0_80
Java HotSpot™ 64-Bit Server VM (build 24.80-b11, mixed mode).

I’m also using Postgresql server version 9.4.0.

The problem is that when I open the Layer Preview and I visualize a layer with OpenLayers I see that the displayed image is different from the original tiff.

If I download for the same layer from layer preview the geotiff I get the right image.
So the error happens only with Open Layer.

Below the links to layer preview:

The wrong image: http://159.122.144.69:8184/geoserver/precipitation/wms?service=WMS&version=1.1.0&request=GetMap&layers=precipitation:id1600s013155r000-europe&styles=&bbox=-16.0,33.0,39.00000000000001,73.0&width=768&height=558&time=2016-06-30T06:33:48.0Z&srs=EPSG:4326&format=application/openlayers#toggle

The right image: http://159.122.144.69:8184/geoserver/precipitation/wms?service=WMS&version=1.1.0&request=GetMap&layers=precipitation:id1600s013155r000-europe&styles=&bbox=-16.0,33.0,39.00000000000001,73.0&width=768&height=558&time=2016-06-30T06:33:48.0Z&srs=EPSG:4326&format=image/geotiff

Does anyone have suggestions?

Thank you for your help.
Best regards,

Matteo.