Created attachment 343854 [details] Patch to ebuild and files/icon/thunderbird.desktop Installed Thunderbird icon looks poor when shown at larger sizes, for example in GNOME 3 Alt-Tab menu. Attached patch copies Firefox ebuild to install icons into /usr/share/icons/hicolor/.
Comment on attachment 343854 [details] Patch to ebuild and files/icon/thunderbird.desktop Superseded by: https://github.com/gentoo/gentoo/pull/1928
Thank Chris for your work, it has landed and will go to stable branch with 45.4.