I create a panel in my main.js file with the following code:
var pan = panel.Panel({
contentURL: data.url("start.html"),
contentScriptFile: [data.url("start.js"), data.url("jquery-1.6.4.min.js")]
});
I’d like to make it larger so I added the width and height properties:
var pan = panel.Panel({
width:400,
height:400,
contentURL: data.url("start.html"),
contentScriptFile: [data.url("start.js"), data.url("jquery-1.6.4.min.js")]
});
After adding these properties the panel gets bigger, however it is also transparent and has no content:

I’m using sdk version 1.2.1 with Firefox 7.0.1 on Ubuntu 11.10.
Looks like this was fixed with Firefox 8.