I like to collect my tabs and delete my all tabs. Collection feature in Firefox let me collect tabs of my name choice, I really like this feature a lot but this feature has a bug * Suppose I made collection of 3-4 number of tabs as list 1. * Then i delete all the tabs * Now when I go to my collection list 1 and select the open tab option from list, the tab comes back but again when I select open tab second time it also bring back all the tabs which was not even in the collection, and it keeps on bringing all the tabs you ever made irrespective of the collection list, though they not add to my collection list but when I open tabs from collection list it brings all the tabs which was deleted and they (tabs) even come back after clearing the browsing history also. Please fix this problem, the solution which i recommend is 1. Collection of tabs should be separate form other browsing activity it should be like a copy which I can curate accordingly. 2. Collection list should not delete even after clearing the browsing history only by manually delete the collection list does so. 3. Give is the option of select all option for selecting tabs its very hard to select tabs one by one and then group them into my collection Please fix this problem it's very annoying i have used collection feature in safari try to take hints from them.