Silverlight not loading in Firefox under very special circumstances

10-27-2007 10:08 AM |

 Hi,

 I think I found a peculiar bug in Firefox's Silverlight engine.

 Conditions: Firefox 2.0.0.8, Silverlight 1.1.20816.0 

To reproduce the bug, follow the  steps:

- Download the Silverlight project from http://www.galasoft.ch/play/GalaSoftLb.SL.SilverlightLogo.zip
- Open the SLN file and press Ctrl-F5; this starts IE.
- Set Firefox to show www.galasoft.ch (my website) when it is started
- Close Firefox
- Open Firefox (the GalaSoft webpage shows) and then copy the URL from IE into Firefox
- The two Silverlight controls don't start.

The problem doesn't appear if you remove one of the two controls from the Default.htm page. It also doesn't occur if you start Firefox with a blank page. Similarly, if you load Firefox as described above, and then press F5 to reload the page, both controls work correctly. The problem also cannot be reproduced in IE.

Thanks,

Laurent