I believe this is an issue which is resolved in Tableau Server 9.0.3.
I actually think I may have misunderstood the issue. I could be wrong but I believe Chrome chooses what to title the tab.
If there is desired functionality for naming values on the tabs other than the way Tab Server currently works, I suggest creating a Ideas and making a case there for different functionality.
You are right that the tabs utilize "workbook name: view name" for the tab so other than having very short names or taking advantage of the full name appearing when highlighting over a Chrome Tab, I can not think of a better customer experience but new ideas are always welcome