Tor Browser shows up as Firefox in Ubuntu dash/launcher
On Debian (with Gnome), Tor Browser always showed up using the green, obvious Tor Browser icon (provided as tor-browser_en-US/Browser/browser/icons/mozicon128.png).
For some reason, on Ubuntu 14.04 64-bit with Unity (v 7.2.4) if I start Tor Browser using the new "start-tor-browser.desktop" file, whether run from the terminal or by double-clicking, it simply attaches to the Firefox icon and treats it like a second instance of Firefox. It does not get its own icon using the provided "mozicon128.png".
Even when I drag the .desktop file into the launcher and click it, it still attaches the process to the Firefox icon.
This might lead to confusion for users who run Firefox in a normal session and Tor Browser concurrently and they might inadvertently enter information intended for TBB into their normal Firefox or vice versa.
As far as I can tell, it's a purely visual issue, but from a design perspective, I would think it'd be advantageous to keep the two identities as separate as possible, including in the launcher / dash.