WD My Cloud randomly wakes up the drive when Drive Sleep is enabled

Thanks for the reply:
Current Version WDMyCloud v04.05.00-327 : Core F/W

Before 1st of April it was all fine:

2019-03-29T08:32:45.091979+01:00 di=H10IhkTgem notice logger: exit standby after 7 (since 2019-03-29 08:32:37.402988000 +0100)
2019-03-29T16:02:28.065643+01:00 di=H10IhkTgem notice logger: exit standby after 26373 (since 2019-03-29 08:42:55.962988000 +0100)
2019-03-29T18:27:11.668355+01:00 di=H10IhkTgem notice logger: exit standby after 8072 (since 2019-03-29 16:12:39.382988000 +0100)
2019-03-30T01:30:04.021576+01:00 di=H10IhkTgem notice logger: exit standby after 24577 (since 2019-03-29 18:40:26.672988000 +0100)
2019-03-30T02:36:51.598282+01:00 di=H10IhkTgem notice logger: exit standby after 3396 (since 2019-03-30 01:40:15.292988000 +0100)
2019-03-30T02:49:14.087227+01:00 di=H10IhkTgem notice logger: exit standby after 7 (since 2019-03-30 02:49:06.382988000 +0100)
2019-03-30T06:52:07.397983+01:00 di=H10IhkTgem notice logger: exit standby after 13962 (since 2019-03-30 02:59:25.042988000 +0100)
2019-03-30T07:21:56.616991+01:00 di=H10IhkTgem notice logger: exit standby after 8 (since 2019-03-30 07:21:48.902988002 +0100)
2019-03-30T11:11:13.975203+01:00 di=H10IhkTgem notice logger: exit standby after 13146 (since 2019-03-30 07:32:07.552988002 +0100)
2019-03-30T17:33:33.497806+01:00 di=H10IhkTgem notice logger: exit standby after 22328 (since 2019-03-30 11:21:25.332988002 +0100)
2019-03-30T17:49:01.527403+01:00 di=H10IhkTgem notice logger: exit standby after 8 (since 2019-03-30 17:48:53.842988001 +0100)
2019-03-30T19:38:10.070370+01:00 di=H10IhkTgem notice logger: exit standby after 5938 (since 2019-03-30 17:59:12.492988001 +0100)
2019-03-31T03:15:10.859086+02:00 di=H10IhkTgem notice logger: exit standby after 23209 (since 2019-03-30 19:48:21.342988001 +0100)
2019-03-31T03:17:13.906666+02:00 di=H10IhkTgem notice logger: calculate_share_size after 2
2019-03-31T03:28:53.018872+02:00 di=H10IhkTgem notice logger: exit standby after 7 (since 2019-03-31 03:28:45.322988001 +0200)
2019-03-31T05:44:15.344549+02:00 di=H10IhkTgem notice logger: exit standby after 5673 (since 2019-03-31 04:09:41.982988001 +0200)
2019-03-31T06:25:09.334909+02:00 di=H10IhkTgem notice logger: exit standby after 1843 (since 2019-03-31 05:54:26.302988001 +0200)
2019-03-31T08:08:26.714603+02:00 di=H10IhkTgem notice logger: exit standby after 5586 (since 2019-03-31 06:35:20.602988001 +0200)
2019-03-31T08:12:35.212820+02:00 di=H10IhkTgem notice logger: calculate_share_size after 4
2019-03-31T08:40:39.767448+02:00 di=H10IhkTgem notice logger: exit standby after 7 (since 2019-03-31 08:40:32.082988000 +0200)
2019-03-31T14:50:17.567787+02:00 di=H10IhkTgem notice logger: exit standby after 21567 (since 2019-03-31 08:50:50.692988000 +0200)
2019-03-31T18:07:44.776176+02:00 di=H10IhkTgem notice logger: exit standby after 11236 (since 2019-03-31 15:00:28.912988000 +0200)
2019-03-31T18:25:13.696231+02:00 di=H10IhkTgem notice logger: exit standby after 7 (since 2019-03-31 18:25:05.952988000 +0200)
2019-04-01T01:06:47.843639+02:00 di=H10IhkTgem notice logger: exit standby after 23483 (since 2019-03-31 18:35:24.662988000 +0200)
2019-04-01T04:34:35.260311+02:00 di=H10IhkTgem notice logger: exit standby after 11856 (since 2019-04-01 01:16:59.082988000 +0200)
2019-04-01T04:57:33.943493+02:00 di=H10IhkTgem notice logger: exit standby after 644 (since 2019-04-01 04:46:49.222988000 +0200)
2019-04-01T05:15:03.056601+02:00 di=H10IhkTgem notice logger: exit standby after 377 (since 2019-04-01 05:08:46.282988000 +0200)
2019-04-01T05:44:00.685416+02:00 di=H10IhkTgem notice logger: exit standby after 1065 (since 2019-04-01 05:26:15.322988000 +0200)
2019-04-01T06:16:14.223825+02:00 di=H10IhkTgem notice logger: exit standby after 8 (since 2019-04-01 06:16:06.592988000 +0200)
2019-04-01T06:36:13.810073+02:00 di=H10IhkTgem notice logger: exit standby after 588 (since 2019-04-01 06:26:25.192988000 +0200)
2019-04-01T07:07:28.500133+02:00 di=H10IhkTgem notice logger: exit standby after 1264 (since 2019-04-01 06:46:24.822988000 +0200)
2019-04-01T07:38:29.521235+02:00 di=H10IhkTgem notice logger: exit standby after 1250 (since 2019-04-01 07:17:39.422988000 +0200)
2019-04-01T08:09:30.494961+02:00 di=H10IhkTgem notice logger: exit standby after 1250 (since 2019-04-01 07:48:40.492988000 +0200)

So I really don’t know what’s wrong. I don’t think I modified anything on 1st of April.