TB-p opens link via temporary local file, how to switch this off?

I´m using TB portable 2.0.0.6 (20070728). When I click on a link in an email, TB calls the default browser. But instead of invoking the webpage from the link, the browser loads a html-file from a local temporary folder (eg. C:\temp\user.htm, when the original link in the mail was https://portableapps.com/user). So it seems, that TB tries to load the webpage itself to a local copy and then invokes the default browser with this temporary file.
This might be a security feature to not leave any information in the browsers history. The files itself are deleted when exiting TB.
Is there a way to directly load the webpage linked in the mail without creating this temporary file?
Thanks for any help
Christian