worker routes in wrangler.toml

I'm having troubles understanding how routes works

This works

routes = [{ pattern = "*/assetscdn/*", zone_id = "<zone_id>" }]

routes = [{ pattern = "*/assetscdn/*", zone_id = "<zone_id>" }]

This doesn't work

✘ [ERROR] Could not find zone for assetscdn

✘ [ERROR] Could not find zone for assetscdn

routes = [{ pattern = "*/assetscdn/*", zone_name = "<zone_name>" }]

routes = [{ pattern = "*/assetscdn/*", zone_name = "<zone_name>" }]

This doesn't work

Route pattern may only contain wildcards at the beginning of the hostname and the end of the path: <domain>/*/assetscdn/*

Route pattern may only contain wildcards at the beginning of the hostname and the end of the path: <domain>/*/assetscdn/*

routes = [{ pattern = "<domain>/*/assetscdn/*", zone_name = "<zone_name>" }]

routes = [{ pattern = "<domain>/*/assetscdn/*", zone_name = "<zone_name>" }]

This doesn't works

✘ [ERROR] Invalid URL

✘ [ERROR] Invalid URL

routes = [
  { pattern = "*", zone_id = "<zone_id>" },
  { pattern = "*/*", zone_id = "<zone_id>" }
]

routes = [
  { pattern = "*", zone_id = "<zone_id>" },
  { pattern = "*/*", zone_id = "<zone_id>" }
]

routes = [
  { pattern = "*", zone_id = "<zone_id>" },
  { pattern = "*/*", zone_id = "<zone_id>" }
]

routes = [
  { pattern = "*", zone_id = "<zone_id>" },
  { pattern = "*/*", zone_id = "<zone_id>" }
]

This work

routes = [
  { pattern = "*", zone_name = "<zone_name>" },
  { pattern = "*/*", zone_name = "<zone_name>" }
]

routes = [
  { pattern = "*", zone_name = "<zone_name>" },
  { pattern = "*/*", zone_name = "<zone_name>" }
]

routes = [
  { pattern = "*", zone_name = "<zone_name>" },
  { pattern = "*/*", zone_name = "<zone_name>" }
]

routes = [
  { pattern = "*", zone_name = "<zone_name>" },
  { pattern = "*/*", zone_name = "<zone_name>" }
]

Is there an implementation difference or I'm missing something?