Finally, https://www.allaboutcircuits.com/technical-articles/switch-bounce-how-to-deal-with-it/ gave some clear examples on hardware debouncing using just a capacitor and led to my solution. With a 104 100nF capacitor as shown on the link above, I was able to correctly determine the wake pin from ...

https://circuitdigest.com/electronic-circuits/what-is-switch-bouncing-and-how-to-prevent-it-using-debounce-circuit this was also good and suggests hardware solutions to bouncing. I may try to find such components to try it out. Unfortunately I'm just a software developer, so don't have an ...

Had to read up on debouce, but it doesn't seem so complicated. https://www.arduino.cc/en/Tutorial/BuiltInExamples/Debounce explains it well.

I guess the theory here is that the larger button causes spurious open/close transitions when pressed, for a longer period compared to the smaller button, so ...

I have hit this exact issue. It took me a while to find a thread on the subject, albeit an old one.

I'm wondering if someone can explain a little more. @Rudy12 suggests there may in insufficient voltage or current, which sounds plausible, but the esp32 does wake with both buttons. However, esp ...