Looks good here. In Ubuntu GNOME Trusty I tested the new build in the standard gnome shell, gnome classic, and flashback w/metacity sessions.
Then in Ubuntu I tested the new package in the standard Unity, flashback w/metacity, and flashback w/compiz sessions.
No problem at all but I suppose one could argue that 'gnome-tweak-tool' is not the optimal tool for tweaking Unity???
I did encounter an unrelated problem while testing Unity - if the key sequence for killing X is changed then the logout button does not seem to respond properly.
There is no difference in which version of 'gnome-tweak-tool' is used to change that sequence though. I'll follow up on that ASAP.