[MC-194479] Using bed in custom world with bed_works and fixed

I created a custom dimension with this world type:

{
  "bed_works": true,
  "fixed_time": 15000,

  "ultrawarm": false,
  "infiniburn": "minecraft:infiniburn_overworld",
  "logical_height": 100,
  "has_raids": false,
  "respawn_anchor_works": true,
  "piglin_safe": true,
  "natural": false,
  "shrunk": false,
  "ambient_light": 1.0,
  "has_skylight": true,
  "has_ceiling": true
}

When I place a bed in this dimension and right-click it, nothing happens: the bed doesn't explode, but it doesn't set a respawn point either.

Using bed in custom world with bed_works and fixed_time does nothing