[Trisquel-users] Blurry icons in Gnome Shell Activities

[ben]

Some applications have a blurry icon in the Gnome Shell's Activities window.   
I guess they didn't provide an icon with the correct size in their package.   
However, it surprises me that LibreOffice is among them. Can anyone else  
using GNOME 3 Shell and LibreOffice see this problem as well?  Any solution?   
I couldn't find any solution online.