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That might be owing to a mild electrostatic discharge into the keyboard through the keys when they were touched, perhaps.
I advise you to immediately turn Off the keyboard, unplug it from the power, and leave it that way for at least 2 or 3 hours, or overnight.
See if that rest-and-reset helps with the problem.
Let me know. Thanks.
If that did not work, a button reset might help also.
If that did clear up the problem, please rate my answer - and a five-star rating would be appeciated!
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