If more than one URL is provided for a measurable, the transition report (e.g. pages) only reports metrics for the URL which was first visited.
E.g. when you have a measurable with the following URLs:
Transitions will only report metrics for the first tracked URL, e.g. https://domain1.com/test1234. Metrics for domain2 and domain3 will be missing.
This is because the transition refers to the URL (e.g. actionType=url&actionName=https://domain1.com/test1234), and not the path (which is shared for all domains).
@peterbo does this work for transitions in Behaviour => Pages correctly?
Actually I just noticed the screenshot is from that report 👍