To compare file versions, we can select a file and then select File > Versions by selecting any 2 different versions, we should be able to click on the Compare Versions link to see the Source Differences.
However, in TeamSite 7.5.0.2 it is not showing actual source of the file in Firefox 35; although it works fine in IE 11.
I have reported this problem with HP tech support, but they do not seem to be able to reproduce this problem and/or provide a solution....
I wonder if any of you out there are using TeamSite 7.5.x and have this same issue with FireFox. If your FireFox works with your TeamSite 7.5, I really wish to know if the Source Differences works on your FireFox.