Thanos UI problem with alert aggreagation

[LukaszSz]

Hi guys,

Could somone explain me why I see difference in alert quantity in Thanos UI between:

--> promql query:

--> Alert view:

Seems that "Alert view" shows me the alerts only from one 'datacenter'. Is it normal situation or should I worry about it.

I have the newest Thanos version:

thanos, version 0.34.1 (branch: HEAD, revision: 4cf1559998bf6d8db3f9ca0fde2a00d217d4e23e)
  build date:       20240219-17:13:48
  go version:       go1.21.7
  platform:         linux/amd64
  tags:             netgo

Than you