BrentG, thanks for that update. Having Harmony promote that change to the device level will, I hope, do the trick. I have had to contact their tech support in the past and I can concur they are great.
boblinds, I know that my Harmony sends input commands upon first pressing the Help button because if any of my devices happen to be set to the wrong input, pressing Help tries to correct this by sending various input select commands to all the relevant devices and immediately asks "Did that Fix the problem?" If it hasn't (and you answer No), then it proceeds to ask questions about the state of specific devices and behaves as you describe.