Redirects breaking after updating to Drupal Core 8.5.4

I recently updated to Drupal Core 8.5.4, and now links on my site that are in the form of http://www.somesite.com/index?sometoken=XXXX are having the "?sometoken=XXXX" part of the URL stripped out. The result can be failure to be recognized as an authorized user at the somesite.com site. The problem occurs for URLs that are using the Redirect module, but the problem began occurring right after I updated Core to 8.5.4.