As usual while waiting for the next release - don't forget to check the nightly builds in the forum.
Commaster: What ubuntu is this screenshot from?
Distributor ID: UbuntuDescription: Ubuntu 16.04.2 LTSRelease: 16.04Codename: xenial
Are there any other ubuntu users that have the same problem?
Are you missing some fonts?
I don't see any mention of whether the problem was seen on a 32-bit or 64-bit Ubuntu / CB - it might have a bearing.
Of 3 Ubuntu PCs, one is missing the check marks.