Discourage more running a browser in parallel to Tor Browser
We have https://support.torproject.org/tbb/tbb-17/ for answering the question about whether it is safe to running a different browser in parallel to Tor Browser.
It's correct that Tor Browser's privacy features are unaffected by that but we should stress more the risk of linking both browsing activities.
Maybe something like
If you run Tor Browser and another browser at the same time, it won't affect Tor's performance or privacy properties. However, be aware that when using Tor and another browser at the same time, your Tor activity could be linked to your non-Tor (real) IP from the other browser, simply by moving your mouse from one browser into the other. Or you may imply forget and accidentally use that non-private browser to do something that you intended to do in Tor Browser instead.
Thanks to ForMariosTheHacker
at h1 to point that out.
Edited by Georg Koppen