Please forgive me... I raised a fuss for this thing!
I even opened a bug here:
http://bugs.sabayon.org/show_bug.cgi?id=1846.
What should I do now? Can I close it?
Do not take me seriously, when I talk about software!

I never stopped to investigate and learning the '
Gnome Library' because I suspected something related ...
Now I discovered that the problem comes from the 'new' gtk methods... (always guilty).
The fact is, I presume there will be a bunch of
gtk themes that could be potentially malfunctions...
In summary, if you still have this problem with
Gnome + Compiz (I can see it yet despite with all latest Sabayon packages) you can try this workaround:
create, if it does not already exist, the
~/.gtkrc-2.0 file and adding this content:
- Code: Select all
###Compiz 0.8.6 corrupted tooltips workaround###
gtk-enable-tooltips = true #default true
gtk-tooltip-browse-mode-timeout = 10 #default 500
gtk-tooltip-browse-timeout = 25 #default 60
gtk-tooltip-timeout = 25 #default 500
save and end your session in order to load new settings.
I've not fully understands also
WHY without this values set, the gtk default isn't used!!!
Please give a try to confirm!
Thanks
Ciao
---
edit
Not fully resolved: tooltips from Emerald windows buttons (close, maximize, minimize) still have problems....
I will continue testing