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Description of problem:

On the host collection page, when you select any host_collection, and then go to hosts tab and then press browsers back button then Left hand navigation menu, footer and header are missing from the page. 

Version-Release number of selected component (if applicable):
6.7

How reproducible:
Always

Steps to Reproduce:
1. Go To Hosts -> Host Collection page
2. Select a host collection (hc1) example
3. Now click on `hosts` tab to add host.
4. Now click on back button of the browser

Actual results:
Page not fully loaded, header, footer, left navigation menu all disappears

Expected results:
The page should load fully

Additional info:

*** This bug has been marked as a duplicate of bug 1797969 ***