Title angle and limit ignored in config

[jwoLondon]

When attempting to configure a title's angle and limit, the values are ignored but shouldn't be. Here's a minimal reproducible example:

{
  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
  "width": 300,
  "title": {"text": ["This is a long enough title"]},
  "config": {"title": {"angle": 16, "limit": 60}},
  "data": {"values": [{"x": 1},{"x": 5}]},
  "encoding": {"x": {"field": "x"}},
  "mark": "circle"
}

Both work if they are specified as direct properties rather than as configuration options:

{
  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
  "width": 300,
  "title": {
    "text": ["This is a long enough title"],
    "angle": 16,
    "limit": 60
  },
  "data": {"values": [{"x": 1},{"x": 5}]},
  "encoding": {"x": {"field": "x"}},
  "mark": "circle"
}