Silverlight 4 problems with FireFox 3.6?

I just started making a Silverlight 4 application and added a button to it.

The button doesn't appear in FireFox though. Works fine in Chrome and IE.

Can't 开发者_如何学Gofind anything specific on google but there seem to be some problems with FireFox 3.6.

Anyone know a work-around or solution?

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If you dont see anything you have to do the height issue (setting the silverlight object to have a height (that isn't just 100%) should help