how do I go about diagnosing a windowing problem that only happens under gnome shell?

[Matthew Miller]

Under Gnome in Fedora 18, returning from full screen in Squeak (including in
the Scratch RPM I'm working on) results in an all-black nonresponsive
window. Doesn't happen in fallback mode or in Xfce (even with compositing
enabled). https://bugzilla.redhat.com/show_bug.cgi?id=906425

How do I go about finding what's to blame and fixing it?





-- 
Matthew Miller  ☁☁☁  Fedora Cloud Architect  ☁☁☁  <mattdm at fedoraproject.org>