Extension Popup Visible Lagging Error

[densyy (densyy@hotmail.com)]

Hey, guys!

I’m programming some firefox extensions and I’m having a layout problem that I can’t solve.
I didn’t find any results on Google

All the addons I created have the same problem.
The popup has a kind of lagging, when opening the popup a bug happens.
Take a look:

Happens on any website
How can I fix that?
Thanks!

[freaktechnik (Martin Giger)]

Sadly you can’t fix that, as it’s a rendering bug in Firefox. Bugs in Firefox are tracked at bugzilla.mozilla.org.