Alertmanager native integration jira problem

Hello.

I am configuring Alertmanager native integration with Jira. Before upgrading to version 0.28.0, we were using the jira-ab receiver. We are using Jira Data Center.

  - api_url: http://hostname-jira/rest/api/2/
    description: '{{ template "jira.default.description" . }}'
    fields:
      components:
      - name: Monitoring
      customfield_10001: Auto-created by Alertmanager
    http_config:
      basic_auth:
        password: <pass>
        username: jiralert
    issue_type: Bug
    labels:
    - alertmanager
    - '{{ .CommonLabels.severity }}'
    priority: '{{ .CommonLabels.severity }}'
    project: MON
    reopen_duration: 1h
    reopen_transition: Reopen
    send_resolved: true
    summary: '{{ template "jira.default.summary" . }}'
  name: receiver-jira-dc

route:
  - continue: true
    group_by:
    - alertname
    - instance
    matchers:
    - alertname = "TestJiraAlert"
    receiver: receiver-jira-dc

However, when sending a test alert, I receive the following message:

time=2025-03-05T10:02:55.603Z level=WARN source=jira.go:145 msg="Truncated summary" integration=jira group_key="{}/{alertname=\"TestJiraAlert\"}:{alertname=\"TestJiraAlert\", instance=\"<name>:9100\"}" max_runes=255

It seems that the correct issue is not being found, and it tries to use the most recently resolved one. I suspect the issue is related to the template configuration.

{{ define "jira.summary" }}[{{ .Status | toUpper }}{{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{ end }}] {{ .GroupLabels.SortedPairs.Values | join "," }}{{ end }}

{{ define "jira.description" }}{{ range .Alerts.Firing }}Labels:
{{ range .Labels.SortedPairs }} - {{ .Name }} = {{ .Value }}
{{ end }}
Annotations:
{{ range .Annotations.SortedPairs }} - {{ .Name }} = {{ .Value }}
{{ end }}
Source: {{ .GeneratorURL }}
{{ end }}
CommonLabels:
{{ range .CommonLabels.SortedPairs }} - {{ .Name }} = {{ .Value}}
{{ end }}
GroupLabels:
{{ range .GroupLabels.SortedPairs }} - {{ .Name }} = {{ .Value}}
{{ end }}
{{ end }}

I need help. What am I doing wrong?

Start in jira.go around the logged lines 145 and 245, then compare the native Jira configuration and the supplied jira.summary and jira.description templates. Determine whether the template configuration explains the issue matching and summary behavior; done means documenting the cause or a reproducible fix.