CoreAnimation Bug in MacOS 10.14.4

Ken Case, writing on The Omni Blog:

It’s incredibly rare for us to have to do this, but I need to let our Mac customers know that the 10.14.4 version of Mojave which shipped a few weeks ago (on March 25, 2019) has a drawing bug which makes windows with large CoreAnimation layers fail to draw. In particular, OmniOutliner and OmniPlan customers have been telling us that since upgrading to 10.14.4, they will open some documents and end up seeing… nothing. Perhaps some empty borders around the window. (Or if another window is dragged over the space where that window should be drawing, they’ll see a trail of its old pixels.) This is most likely to affect customers who are using older hardware, but it also affects large documents on newer hardware.

We’re working with Apple to get this resolved as soon as possible, but for now it appears there’s nothing we can do to resolve this on our own.

Bugs happen, but with all the ongoing consternation regarding Apple’s (and particularly the Mac’s) software quality, it’s a little worrisome to see this in a .4 release. A .4 release of the OS should be peak stability.

And the big problem for Omni Group customers hit by this is that there is no easy way to revert from 10.14.4 to 10.14.3, and Apple has encouraged users to turn on auto-updates to new OS releases.

★ Friday, 12 April 2019