What about ground... I fail to see how the groundplane in lower left is connected to the other ground??
This. No, they're not bridged by the pushbutton.
Also, the two small diodes - what happened to them? Using thin leads as scope probe clip points is not a good idea.
Anyway they both have mangled leads, perhaps they are fractured?
Edit: Oh wait. Are those actually surface mount resistors with wires soldered to them?