Description of problem: I use fvwm2 and also xmodmap -e "pointer = 3 2 1" to make the mouse left handed. Version-Release number of selected component (if applicable): gtk3-3.0.11-1.fc15.i686 How reproducible: Steps to Reproduce: When running gtk3-demo selecting "Dialog and Message Boxes" opens a dialog box, but the buttons in that dialog box do not react to any mouse clicks, what is strange is that item selected the main gtk3-demo window changes when clicking on the dialog box... No other widgets seem to have this problem. gtk3-demo is just an example, the problem happens in all Gtk3+ applications. gtk2-demo does NOT have this problem. This setup has worked for 10+ years, no other toolkits have the same problem.
It turns out that this is a bug in the X server.
http://patchwork.freedesktop.org/patch/8367/
xorg-x11-server-1.10.4-2.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/FEDORA-2011-17145/xorg-x11-server-1.10.4-2.fc15
xorg-x11-server-1.10.4-2.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.