Selecting service in dashboard which is monitored from different sites the site information got lost on sending command

[pbiering]

Describe the bug
Selecting service in dashboard which is monitored from different sites the site information got lost

Thruk Version
Thruk 3.16

To Reproduce
Steps to reproduce the behavior:

1. deploy 2 sites with equal configuration (e.g. georedundant "external" monitoring)
2. connect the 2 sites to a collector site
3. create a dashboard on the collector site which then lists services per site for a host
4. try to acknowledge the service by clicking onto the service and then send related command

Expected behavior
Ack will be send via livestatus to selected service+site combination

Current status is that ack will be sent to one site only (looks like the last one by alphabetical order) and later report that ack is already applied while the other service+site combination was selected