Credit: Daniel Korpai / Instagram

macOS Mojave 10.14.6 Supplemental Update comes just about a week and a half after the release of macOS 10.14.6. That was a relatively minor update that included a handful of bug fixes and some improvements to Apple News+.

The Supplemental Update addresses an issue that prevents some Mac devices from waking up from sleep properly, Apple says. There doesn’t appear to be any other bug fixes, under-the-hood changes or even security updates. It only fixes that one particular problem.

It isn’t clear what the symptoms of the bug are or how widespread it is. We haven’t run into the bug ourselves and have seen virtually no reports of it across social media.

According to the sparse reports we could find, the bug appeared to prevent some older Macs from waking up at all (which, of course, caused some users to think that their devices had died).

Likely because of that, Apple recommends that all users update to macOS 10.14.6 Supplemental Update to squash the bug.

It’s worth noting that the original macOS 10.14.6 point release also fixed an issue that occurred when a Mac was waking from sleep. That bug was a graphical issue that caused weird glitches on certain Mac products, as you can see in the Reddit post below.

Waking from sleep sometimes results in graphics glitches. Anyone else seen this before? from mac

The fact that Apple has run into wake from sleep bugs in its last two software updates does suggest that something else may be going on. Of course, that’s just speculation at this point.

Users can download the Supplemental Update by going to System Preferences > Software Update and selecting the Update Now option.

For those that are curious, the build number for the new update is 18G87 (a jump from the previous build of 18G84). It seems to be about 900MB in size.