<input type="submit"> with CSS background in Blackberry 9520 disfunctional

<input type="submit"> with CSS background in Blackberry 9520 disfunctional

Hello, jQuery mobile team!

I am currently developing a HTML5/CSS3/JS template set for mobile webkit browsers, including the Blackberry's Torch Browser. In the Blackberry 9520, I found a malfunction of input type=submit Elements which become unclickable if they get a CSS background.

Has anyone else experienced this error and if yes, have you found a solution?

Thank you in advance for your answers.
Alex