Links are being modified (garbage is being added)
UPDATE
When pasting a link to the PTC Help Center, the link is being modified and Google Analytics parameters are being added (_ga=xxxxx). This results in a 404.
Old message
Whenever I paste a link to a website, that link is being modified when I hit "Post".
www.google.com (open this link and look at what is added after the .com)
"&_ga=2.97537119.1141601435.1508137266-115588072.1484289270" is being added after the link, which results in a dead link (404 - Sorry, page not found)
https://stackoverflow.com/ (no garbage is added)
https://www.ptc.com/ (garbage is added)

