Floating point issues in expression browser Y-axis labels

[snaix]

What did you do?
Just show some float number in prometheus
What did you expect to see?
a correct scale in Graph
What did you see instead? Under which circumstances?
a wrong scale with wrong/duplicated number
Environment
Windows 10

• System information:
  Microsoft Windows [Version 10.0.16299.98]

• Prometheus version:
  2.0
  prometheus, version 2.0.0 (branch: HEAD, revision: 0a74f98)
  build user: root@615b82cb36b6
  build date: 20171108-07:19:19
  go version: go1.9.2

• Prometheus configuration file:

# my global config
global:
  scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
  # scrape_timeout is set to the global default (10s).

# Alertmanager configuration
alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093

# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: 'prometheus'

    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.

    static_configs:
      - targets: ['localhost:9090']
  - job_name: 'consul'
    consul_sd_configs:
      - server: 'test.com:8500'
        services: ['prom_exporter']

the scale in prometheus:

the same graph in grafana

[simonpasquier]

Could you try with v2.8.1 as some UI components have been updated?