@Lukas: These issues are about to be fixed now. The solution, which is about to be uploaded to both trusty and utopic, does not include a split of the fonts-droid package. Consequently you should uninstall the fonts-droid-cjk and fonts-droid-general packages from my PPA, to not confuse your system. You should also remove the ~/.config/fontconfig/conf.d/65-droid-sans-first.conf (from the bug #1334495 discussion) if you haven't already.
@Lukas: These issues are about to be fixed now. The solution, which is about to be uploaded to both trusty and utopic, does not include a split of the fonts-droid package. Consequently you should uninstall the fonts-droid-cjk and fonts-droid-general packages from my PPA, to not confuse your system. You should also remove the ~/.config/ fontconfig/ conf.d/ 65-droid- sans-first. conf (from the bug #1334495 discussion) if you haven't already.