esp32_ble_tracker scan_interval not used correctly

[njbuch]

Operating environment/Installation (Hass.io/Docker/pip/etc.):

Windows, platformIO - all newest components as of today.

ESP (ESP32/ESP8266/Board/Sonoff):

ESP32

Affected component:

esp32_ble_tracker

Description of problem:
When changing the scan_interval in the YAML file, the scan_interval written in the log-files does not match, and it seems that only the default value of 300s works.

Problem-relevant YAML-configuration entries:

esphomeyaml:
  name: tracker
  platform: ESP32
  board: nodemcu-32s

wifi:
  ssid: 'xxx'
  password: 'xxxx'

# Enable logging
logger:

# Enable Home Assistant API
api:

ota:

esp32_ble_tracker:
  scan_interval: 10s

Traceback (if applicable):

Additional information:

[OttoWinter]

Duplicate of esphome/esphome#361