Utm fields filtered when shields are down for site

I use Brave as my default browser while doing web development work.
When testing utm query parameters, Brave was forcing a “307 internal redirect” that was cutting out my utm fields from the URL. This is happening on a site that has shields turned off.

Issue impact: It is impossible to run development involving UTM parameters

Desired behavior: when shields are turned off, no filtering is applied to the URL or Cookies

Slight chance, but you might Disable cache:

I barely understand:

https://github.com/szepeviktor/w3-total-cache-fixed/issues/221

I searched online, using keywords:

UTM query parameters developer tools window disable cache