I am having an issue with tracking Google Shopping as the GCLID is dropped from the URL. The issue seems to be that I am not able to add any parameters to the URL and the issue is only occurring on product pages.
For example, the issue occures on this page when adding the parameter "gclid=TeSter-123".
Why is the parameter dropped when loading the URL?
Visually these are always dropped.
However if you can not track data, this is most likely due to you choosing manual UTM tracking in Google Analytics. Make sure to have it set to automatic.