HA not showing all 3 values of ESPHome pms5003 particulate sensor

ESPHome
1

Dear Cognoscenti
I have a PM2.5 particulate sensor (https://www.aliexpress.com/item/4001039451614.html?spm=a2g0o.order_list.order_list_main.60.12641802Hsgrxr)
Until about a month ago HA was showing 3 values/entities - PM1.0, PM2.5 and PM10.
Since then, and still using the configuration I had before, HA has shown only 2 of these.
If the configuration includes all 3 values, HA shows the PM10 and PM2.5. By blocking one of these lines and adding the PM1.0 lines in the ESP configuration file, it will show the PM1.0 value and the other PM value specified in the ESP configuration file.
Here is the full configuration file:

esphome:

  name: esp322

  friendly_name: ESP322

esp32:

  board: esp32dev

  framework:

    type: arduino

# Enable logging

logger:

#  level: VERBOSE

# Enable Home Assistant API

api:

  encryption:

    key: ""

ota:

  password: ""

wifi:

  networks:

  - ssid: !secret wifi_ssid

    password: !secret wifi_password

    priority: 1

  - ssid: !secret wifi_ssid1

    password: !secret wifi_password

    priority: 0

  # Define local domain name

  domain: .xx.local

  # Add static ip address

  manual_ip:

    static_ip: 192.168.1.xxx

    gateway: 192.168.1.xxx

    subnet: 255.255.255.0

    dns1: 192.168.1.xxx

  # Enable fallback hotspot (captive portal) in case wifi connection fails

  ap:

    ssid: "Esp322 Fallback Hotspot"

    password: ""

captive_portal:

   

uart:

  tx_pin: GPIO17

  rx_pin: GPIO16

  baud_rate: 9600

sensor:

  - platform: pmsx003

    type: PMSX003

    pm_1_0:

      name: "PM1.0"

    pm_2_5:

      name: "PM2.5"

    pm_10_0:

      name: "PM10"

    update_interval: 60s

Here is a line of text from the log showing all 3 values are being passed by the PM sensor:

[22:51:10][D][pmsx003:236]: Got PM1.0 Concentration: 6 µg/m^3, PM2.5 Concentration 9 µg/m^3, PM10.0 Concentration: 9 µg/m^3
[22:51:10][D][sensor:110]: 'PM1.0': Sending state 6.00000 µg/m³ with 0 decimals of accuracy
[22:51:10][D][sensor:110]: 'PM2.5': Sending state 9.00000 µg/m³ with 0 decimals of accuracy
[22:51:10][D][sensor:110]: 'PM10': Sending state 9.00000 µg/m³ with 0 decimals of accuracy

I have also noticed that the PM2.5 and PM10 values have become identical - is the PM2.5 value a subset of the PM10 ie in the readings above there are no particles sized between 2.5 and 10 µg?

Thank you all for your advice.