While I haven't been able to figure out why the action isn't working, I did find a way around it by using this:

action = {
'type': 'ir.actions.act_window',
'view_type': 'form',
'view_mode': 'form',
'view_id': my_view,
'res_model': 'my_model',
'target': 'main',
'res_id': id,
}

It isn't perfect, but it solved by problem.