[🐞] Segment parsing URL for UTMs is not working

Describe the bug

Segment parses the URL automatically looking for UTMs params, this manipulation involves location.search, when you visit the URL with UTMs params Segment automatically adds them to the context property in the event payload.

Documentation - https://segment.com/docs/connections/sources/catalog/libraries/website/javascript/#utm-trackingadds

This is reproducible with any project loading partytown with segment

Reproduction

localhost:3000?utm_source=mysource&utm_medium=email

Steps to reproduce

Negative

Load Segment via Partytown
Forward Segment events
Visit your page with UTMs params like url?utm_source=mysource&utm_medium=email&utm_campaign=mytestcampaign

Check Page event payload looking for context property, it should include:

context”: { “campaign”: { “medium”: “email”, “name”: “mytestcampaign”, “source”: “mysource”, } ... restOfProperties}

But is missing

Positive

Now load Segment inline snippet in the head of the page without type="text/partytown" tag
Visit the same URL

Check Page event payload looking for context property, it should include:

context”: { “campaign”: { “medium”: “email”, “name”: “mytestcampaign”, “source”: “mysource”, } ... restOfProperties}

Browser Info

Chrome, Safari

Additional Information

Seems that we need to forward location.search somehow but does not work, when you forward location. the URL changes on load and partytown shows a function instead:

From : http://localhost:10701/playground?utm_source=mysource&utm_medium=email
To: http://localhost:10701/function()%7B(t._ptf=t._ptf%7C%7C[]).push(i,arguments)%7D

Same result happens if you forward localtio.search or location.href, or location.pathname

BuilderIO / partytown