Note that bad features, poor interface design, and problems with third-party apps, etc., are. Following the release of Sierra 10.12.6, this list has been superseded. This list is no longer maintained: please refer to that last for the latest information.

If you are looking for a list of bugs in previous versions of Sierra,,,,. Note, though, that those are no longer maintained. Contacts – unexpected quit from Print dialog Open the Print dialog in Contacts, and Show Details. With the uppermost popup menu reading Contacts (for the app-specific print settings), select the Style of Pocket Address Book. Almost any control which you try to adjust after that will result in an unexpected quit: for example, editing the Attributes, or changing the Flip Style.

The macOS Sierra 10.12.3 Update improves the stability and security of your Mac, and is recommended for all users. This update: Improves automatic graphics switching on.

There is no workaround: printing from Contacts is at least partly broken for now. Display sleep – multiple display setups may not wake properly after sleep A few users, mainly with iMac 5K models, are reporting that allowing display sleep with one or more external displays connected causes problems when waking.

Although the external displays wake normally, the iMac display does not. So far the only way to restore a normal image on the internal display is to restart.

This was new with 10.12.4, and persists in 10.12.5. The workaround is to disable display sleep if affected, and rely on a screensaver which darkens much or all of the display. Microsoft office for mac update 14.7.7.

(Thanks to Richard Petersen for reporting this.) Time Machine and other background activities – irregular and unreliable after long periods of running The long-running bug affecting undocumented systems in macOS which schedule and dispatch background activities, most notably including Time Machine backups, has still not been fixed in 10.12.5. Macs which are left running continuously for more than about 7 days are liably to develop this. The most obvious symptom is that scheduled backups stop, becoming very irregular. The only solution is to restart the affected Mac.

This bug was reported to Apple in February 2017. It has remained unfixed in 10.12.4 and 10.12.5 (see reports in comments below). Energy Saver pane – inconsistencies in controls, and misbehaviour on some models The features available in the Energy Saver pane of System Preferences are inconsistent between Macs, and incomplete, for example not providing a separate control slider for system sleep on some hardware. Further details are.

A further bug affects some models, including the iMac17,1 with a Fusion Drive: irrespective of the setting to put hard disks to sleep (ticked or not), system sleep invariably puts hard disks to sleep. The only way to prevent hard disks from being put to sleep is to prevent system sleep altogether. These are long-standing issues which date back to El Capitan. Safari – lost duplex printing option A new bug introduced with 10.12.4 is the loss of duplex printing options for certain Canon and Epson printers. This is also true of Safari Technology Preview, and persists in 10.12.5. The workaround is to print (or save) to PDF and print that using an app which offers duplex mode. (Thanks to Henry for reporting this below.) Preview – loss of all items from Services menu Preview, and other apps which rely on PDFKit, no longer support any items in the Services menu.

Those which had previously been accessible are no longer there. There does not appear to be any workaround. (Thanks to derdennis for reporting this.) App Store – app has lost its progress bar When downloading some updates, the App Store app may show no progress indicators at all.

The only indicator will be seen when viewing the app being updated in the Finder. This is a new bug with version 2.2.1 of the App Store app included in the 10.12.5 update.

During longer downloads, a progress indicator may be shown as previously. The only workaround is to view the app’s icon in the Finder, which does have a progress circle shown with it. Osascript – open location fails in AppleScript When entered into the command line, osascript -e 'open location 'fails with execution error: 'doesn’t understand the “open location” message. (-1708) although that code works fine in the Script Editor. This bug appears to be new to 10.12.5.

The workaround is to aim the command at Safari: osascript -e 'tell application 'Safari' to open location '(Thanks to defjaf for reporting this below.) Console – no access to full historic log data The Console utility does not provide full access to log entries already gathered before the app is opened. This has been the case since Sierra 10.12. Workaround: use the log show command in Terminal, or export the whole log to a.logarchive file, then browse that using Console.