Shift key goes solo

Since updating to Sierra 10.12.6, the Q

ß key on my Apple wireless keyboard misbehaves with other modifier keys in Adobe apps. For example, holding åßand while trying to draw a square from the centre out in Photoshop, behaves as if only one key is being held, not both. This applies to both my keyboards, wireless or cabled. What’s wrong? by Sean Crozier If the rest of the update went fine, A and you have no other glitches, this probably results from a driver or other extension, and has been reported with Wacom graphics tablets.

A good test would be to disable third-party extensions by booting your Mac using Safe Mode (press the Power button then hold ß until the Apple logo appears), but that may make it impossible to use those apps too. If you can use them in Safe mode, test to see if this still occurs. If the bug disappears, look at recently-installed drivers, such as Wacom’s.

If necessary, download earlier and later versions of the driver, and see whether either makes any difference. You may find that the previous version does the trick.