https://bugs.launchpad.net/ubuntu/+source/msttcorefonts/+bug/1437764
This bug is really bad. I’ve switched quite a few people over to Ubuntu Mate recently, but this bug is so bad that it’s really making me have my doubts. It’s not technically the Mate edition’s fault, but it is nevertheless present in Ubuntu Mate. This bug affects Ubuntu proper and Ubuntu Mate, and probably other spinoffs too that I don’t use. It’s been present since at least 14.04, if not longer.
In summary: The ttf-mscorefonts-installer gets installed as a dependency of many super-common packages such as ubuntu-restricted-extras and Wine. Practically every Ubuntu user will run into this bug if they install anything from the Software Center. It results in failed installation of ttf-mscorefonts-installer because Ubuntu Software Center can’t show the EULA, and the entire APT system ends up seriously broken, requiring manual terminal intervention.
If you have seen this bug, please hit the “This bug affects me” link so that Ubuntu devs finally take this bug seriously.