Can we see the other side as well?
Always tough to see in pics, but I have seen a lot of issues where flux is causing shorts. Tough to see the clean margins between pads, but def make sure there is clean clearance between all pads...looks close between speaker pads and +\-, although if they were connected you would have bigger issues.
Asked about the other side as I am not sure what you meant by jumping between switches and ground. If you just mean combining the ground wires from both switches, cool.