Wireless iMac keyboard 'stick' after sleep

Sometimes (mostly, but not always - prob 90% of the time) my wireless keyboard 'glue' after my iMac 27 "comes out of sleep mode.  At the login prompt, the entry buffer fills up with junk as if a ghost is to type, and the keyboard is completely insensitive (e.g. to remove). The only solution is to hold the power button on the keyboard until it stops and then put the new one.

The keyboard is not sticking in the physical sense, because once he recovers after a power cycle, it is back to normal (a properly glued key would be obvious that it repeats)

Battery levels are very good - this behavior occurs regardless of the battery status. I read other reports of people in need of re-pair the bluetooth connection.  He doesn't lose it is the pairing, but there is a problem with connectivity, or there is a bug?

Anyone who has experienced this problem?

Thank you

Try to do a reset of the SCM and LANDAU. The SMC reset may have to be tried 2 or 3 times back to back. If you are not familiar with these resets, please read iMac SMC and reset the PRAM. If those who do not help, please post back and there is something else to do.

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