I have a publishing site and copied the v4 masterpage then changed the style to hide the quicklaunch bar in v4 copy masterpage.
When I reverted the masterpage to v4 masterpage, the page is not rendered with quick launch bar. I did check in developer tools and found the css used to hide quick launch, though I did not modify any thing in v4 masterpage.
Even I created a new publishing site with v4 master, I am still not able to render quick launch there.
Please point me to resolve the issue.