I'm seeing this as well on a laptop with a mirrored external display. As soon as I close the laptop lid (presumably disabling the built in display) the Enhanced Zoom Desktop begins to work correctly.
This is unfortunate, since I imagine the types of users who need accessibility features to help with visual issues are also very likely to have large screen external displays attached to a laptop. This is on: Ubuntu 16.04 LTS ASUS ZenBook Pro UX501VW 15-Inch Ultra-HD 4K Touchscreen Laptop (Intel Skylake Core i7-6700HQ CPU, 16 GB DDR4, 512 GB NVMe SSD, Nvidia GTX960M GPU -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1479083 Title: Enhanced Zoom Desktop has no effect except making mouse cursor disappear To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1479083/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp