Making the Quick Launch appear again on Web Part pages stored in a document library

There are a few option to make it happen, I followed David’s step to modify the master page of the site:

or you can modify every page.

Dropdown to change the View disappeared

Sometime the list web part doesn’t show the change view dropdown list, I found this soltuion by just removing the web part and re-add it from the closed web part in Advanced Web Part gallery and options. It works.

See the blog for more details