Even themes advertised as Gnome-shell 3.4 compatible have graphical issues on Gnome-Shell 3.4. The main thing is that the text is black and nearly invisible, and the icons in the applications screen are crowded and in some cases overlapping. The themes did not do this before upgrade, and the default doesn't do it now. I am using user theme extension, and the themes I have tried are the Ambiance-Color set and London Smoke (both of which are advertised as 3.4 compatible).
Ubuntu – Gnome-Shell 3.4 Themes not working in 12.04
12.04gnome
Best Answer
Here is the right way to get gnome-tweak-tool (advanced settings) to work therefore shell themes and extensions to work WITHOUT breaking your gnome shell
Restart the shell (Alt F2 >> r >> enter)