Mozilla/5.0 (X11; U; SunOS i86pc; en-US; rv:1.9) Gecko/2008052423 Firefox/3.0 Steps to Perform: 1. Navigate to http://www.campd.org/stuff/tests/offline/offline1.html. 2. When the information bar comes down, select "Allow" to let me cache. 3. Navigate to Edit | Preferences and Select the Advanced | Network tab. 4. You should see campd.org in the list of of sites that have stored data for offline use. please refer to screenshot1 attached. 5. Go to Tools | Clear Private Data and check the "Offline Website Data" box. 6. Select the "Clear Private Data" button Expected Results: 1. You should no longer see campd.org in the list of sites that have stored data for offline use. 2. Confirm the offline cache has been cleared by going typing about:cache in the URL bar and confirmingStorage in use = 0 KiB, Actual Results: 1. Campd.org still exists in the list of sites have stored data for offline use. please refer to screenshot2 attached.

Duplicate of Bug 425637 ?

Regression from bug 442806. I'm getting this error in the console: JavaScript strict warning: chrome://browser/content/preferences/advanced.js, line 264: reference to undefined property Components.interfaces.nsIOfflineCacheSession For bug 425637, I don't see a warning when clicking the "Clear Now" button.

WFM Version 47.0 Build ID 20160604131506 User Agent Mozilla/5.0 (Windows NT 10.0; WOW64; rv:47.0) Gecko/20100101 Firefox/47.0 There have been updates but here are steps I applied 1) Access https://en.wikipedia.org/wiki/Richard_Childress_Racing 2) Apply File Save As... and save for offline reading 3) Access about:cache and observe Data Size etc... [WorkOffline, go to new tab & ensure page is still readable) 4) Ctrl Shift Del and ensure checkbox for Offline Website Data is checked - Clear Now 5) Check about:cache and observe data has been cleared.