Correct and I think the reason why they don't blindly resend the discrete PowerOn command when switching to another activity using the same device, is because they would also have to invoke the power on delay. This would slow down the activity switching considerably with devices requiring a very long power on delay. Instead, they made it an option with the "press the same activity again" feature.

Note: You can also press the Help button instead. I will resend all discrete commands and ask if this fixed the problem.