I have a problem in Opera Mobile browser which is failing to display jQuery dialog icons. This is how this looks like:
As you can see, icon left from error, which should be close button (x) is missing, as well as the icon in the "OK" button. Also, "Automatic" button in the background (lower right part of the screenshot) also lacks its icon.
Any idea what might be the problem, having in mind that this is only happening with Opera?
I found the solution. When I was downloading jQuery Mobile files, I thought I only needed js and css files, but it turned out that there is a folder named "Images" which contains all jQuery Mobile icons :)
To conclude, don't download only js and css files, download and deploy the whole zip file!