[OpenLayers-Users] 2.12-rc IE8 zoom rectangle causes map to disappear briefly

[Richard Greenwood]

In my own OpenLayer-based application with IE8 and OL 2.12-rc7 (and
rc1) when I initiate a zoom rectangle the map image goes blank briefly
(approx 1/2 second). I don't see the problem in the OpenLayers
examples nor do I see the problem in my application under IE9 or with
other browsers. I'm using panel controls for the zoom in/out but
otherwise nothing special. I've pruned my new OpenLayers.Map()
declaration down to the bare minimum. I'm using cursor styles, but
removing them didn't have any effect:
.olControlZoomBoxActive {
  cursor: url('/mapserver/common/rwg/img/zoomInRWG.cur'), auto;
}

I can't think where else to look. Has anybody seen similar behavior or
have any suggestions on things to look at? Here's a link to my problem
app:
   http://mapserver.parkcounty.us/map6.html
Thanks
-- 
Richard Greenwood
richard.greenwood at gmail.com
www.greenwoodmap.com