Is your original base layer in the same projection as the Bing layer? OL
changes its working map projection to that of the baselayer. If you are
drawing circles in coordinates of one projection and dont transform to
the projection of the baselayer, then they will disappear. Ie I think
bing layer are in web mercator? If so then you need to make sure your
drawing coordinates are also web mercator.
Notice: This email and any attachments are confidential.
If received in error please destroy and immediately notify us.
Do not copy or disclose the contents.
_______________________________________________
Users mailing list
us...@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/openlayers-users