[BUG] Energy consumption of aqara T1 is oscillating

[dontinelli]

Bug description

I have some Aqara T1 (with neutral) which for the moment basically work fine. However, I noticed that since 2 May the value for energy consumption of one switch is oscillating between the effective value and a (fixed) lower value (cf. below screenshot):

The duration the lower value is set is not always the same:

This odd behavior only applies to one of my T1 switches. Neither the restart of HA nor the reconfiguration of the device over the UI have changed anything.

Steps to reproduce

Review entity history

Expected behavior

Value is constantly increasing

Screenshots/Video

Screenshots/Video

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Device signature

Device signature

{
  "node_descriptor": {
    "logical_type": 1,
    "complex_descriptor_available": 0,
    "user_descriptor_available": 0,
    "reserved": 0,
    "aps_flags": 0,
    "frequency_band": 8,
    "mac_capability_flags": 142,
    "manufacturer_code": 4447,
    "maximum_buffer_size": 82,
    "maximum_incoming_transfer_size": 82,
    "server_mask": 11264,
    "maximum_outgoing_transfer_size": 82,
    "descriptor_capability_field": 0
  },
  "endpoints": {
    "1": {
      "profile_id": "0x0104",
      "device_type": "0x0000",
      "input_clusters": [
        "0x0000",
        "0x0002",
        "0x0003",
        "0x0004",
        "0x0005",
        "0x0006",
        "0x0009",
        "0x000a",
        "0x0702",
        "0x0b04",
        "0xfcc0"
      ],
      "output_clusters": [
        "0x000a",
        "0x0019"
      ]
    },
    "21": {
      "profile_id": "0x0104",
      "device_type": "0x0000",
      "input_clusters": [
        "0x000c"
      ],
      "output_clusters": []
    },
    "31": {
      "profile_id": "0x0104",
      "device_type": "0x0000",
      "input_clusters": [
        "0x000c"
      ],
      "output_clusters": []
    },
    "41": {
      "profile_id": "0x0104",
      "device_type": "0x0000",
      "input_clusters": [
        "0x0012"
      ],
      "output_clusters": []
    },
    "242": {
      "profile_id": "0xa1e0",
      "device_type": "0x0061",
      "input_clusters": [],
      "output_clusters": [
        "0x0021"
      ]
    }
  },
  "manufacturer": "LUMI",
  "model": "lumi.switch.n0agl1",
  "class": "zhaquirks.xiaomi.aqara.switch_t1.SwitchT1Alt3"
}

Diagnostic information

zha-e5966a6cb73290616e4ffa5201c869cf-LUMI lumi.switch.n0agl1-160d438d0419fc1aa08ff38e982f540e.json

Diagnostic information

Logs

The only log entry I found is related to the fact that the value is not strictly increasing.

Logs

Entity sensor.keller_deckenlampe_energy from integration zha has state class total_increasing, but its state is not strictly increasing. Triggered by state 41.15 (42.26) with last_updated set to 2025-05-10T09:27:00.026109+00:00. Please create a bug report at https://github.com/home-assistant/core/issues?q=is%3Aopen+is%3Aissue+label%3A%22integration%3A+zha%22

Additional information

No response