states.update returns empty list inside trigger_variables on Home Assistant 2026.5.4

[RF1705]

Bug: states.update evaluates to an empty list inside trigger_variables

Environment

• Home Assistant: 2026.5.4
• Blueprint version: Home Assistant Auto-update on a schedule
• Installation type: Home Assistant OS

Description

Automatic updates never start although update entities are available and in state on.

After investigating the automation trace, I found that installable_entities is always empty:

installable_entities: []

This causes the condition

states.update
| default([])
| selectattr("state", "eq", "on")
| selectattr("entity_id", "in", installable_entities)
| rejectattr("entity_id", "in", input_update_exclusions)
| list | count | int(0) > 0

to always evaluate to false.

Relevant blueprint code

trigger_variables:
  installable_entities: >
    {% set ns = namespace(list=[]) %}
    {% for e in states.update | default([]) %}
      {% if (e.attributes.supported_features | int(0)) | bitwise_and(1) %}
        {% set ns.list = ns.list + [e.entity_id] %}
      {% endif %}
    {% endfor %}
    {{ ns.list }}

Investigation

The exact same template works correctly in Developer Tools → Templates.

Template result:

[
  "update.home_assistant_core_update",
  "update.advanced_ssh_web_terminal_update",
  "update.homematic_ip_local_for_openccu_update",
  "update.battery_notes_update"
]

However, inside trigger_variables it evaluates to:

[]

Minimal reproduction

alias: Test trigger_variables states.update

trigger_variables:
  installable_entities: >
    {% set ns = namespace(list=[]) %}
    {% for e in states.update | default([]) %}
      {% if (e.attributes.supported_features | int(0)) | bitwise_and(1) %}
        {% set ns.list = ns.list + [e.entity_id] %}
      {% endif %}
    {% endfor %}
    {{ ns.list }}

trigger:
  - platform: state
    entity_id: schedule.update_plan
    to: "on"

action:
  - action: persistent_notification.create
    data:
      title: Test trigger_variables
      message: >
        installable_entities = {{ installable_entities }}

Result:

installable_entities = []

Available update entities at the time of testing

update.home_assistant_core_update
update.advanced_ssh_web_terminal_update
update.homematic_ip_local_for_openccu_update
update.battery_notes_update

Question

Is states.update expected to be unavailable inside trigger_variables, or should this be considered a Home Assistant compatibility issue introduced in recent versions?

[edwardtfn]

• fix: compute installable_entities in full template context (fixes scheduled runs) ha_auto_update_scheduled#16