This was weird.
I made app for each button to turn on 3 LED’s near the button.
Pressing multiple buttons lit multiple LED’s. Pressing 4 buttons worked fine.
But sometimes LED’s on left side, especially 7 oclock and 8 oclock don’t work or are stuck on the wrong color.
Cycling power doesn’t help.
How do I unsnap the Photon from the Internet Button shield? Maybe bad connection.