On a second thought, I should flag this permission issue as a failure, to ensure attention...
I've given this update only a short test, so I won't confirm functionality, but I've noticed an issue that should probably get fixed ASAP: Both /var/lib/roundcubemail and /var/log/roundcubemail are created with mode 0775, but that should be mode 0770 for security reasons.
Installed fine, basic test went OK
Please update to v1.1.12 instead, which was released yesterday and fixes a regression