Also affects iceweasel 38.4.0esr-1 amd64 on sid. Workaround is to use inkscape to regenerate the png icons: as root:
for n in 16 32 48; do inkscape -z -e /usr/share/iceweasel/browser/chrome/icons/default/default$n.png -w $n -h $n /usr/share/icons/hicolor/scalable/apps/iceweasel.svg; done
for n in 16 32 48 64 128; do inkscape -z -e /usr/share/icons/hicolor/${n}x${n}/apps/iceweasel.png -w $n -h $n /usr/share/icons/hicolor/scalable/apps/iceweasel.svg; done
To refresh the icon in the XFCE Application menu, log out and in. Kind regards, -- Ben Caradoc-Davies <[email protected]> Director Transient Software Limited <http://transient.nz/> New Zealand

