My Apple wireless keyboard goes haywire after I wake my mac mini from sleep. It either opens a window for foreign accents for vowels or repeats the initial keystroke 30-50 times. If I shut off the keyboard and turn it back on everything works as it should. I reset the SMC & NVRAM but with no effect. Initially I thought my keyboard was the problem. So I purchased another one and the problem persists. I have since upgraded from El Capitan to Sierra and the problems persist. I suspect I have a firmware or hardware issue. It doesn't seem that others are having this set of problems. Suggestions?
I have been have a similar problem after waking. When I try to log in characters are automatically typed, Turning off and then back on the Apple BT KB resolves the problem. It happened with El Capitan and with Sierra too.
