User Agent: Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 Firefox/24.0 SeaMonkey/2.21 (Beta/Release) Build ID: 20130916112225 Steps to reproduce: 1. Create a new SeaMonkey profile (so that it would be clear that the problem is not connected to user preferences/installed add-ons). 2. Visit a site that uses the Web Storage, i.e. stores info locally (say, http://www.w3schools.com/html/tryit.asp?filename=tryhtml5_webstorage_local). 3. Open Data Manager. Actual results: The Storage tab for the site you visited is greyed out. Expected results: The Storage tab for the visited site should be accessible, showing the total amount of bytes stored.
Created attachment 8644782 [details] Screenshot Data Manager At least I can confirm observation that for "w3schools.com" "Storage" TAB of Data Manager is greyed out with SeaMonkey en-US 2.39a1 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:42.0 from official download area) Gecko/20100101 Firefox/42.0 Build 20150801224600 (Classic Theme) on German WIN7 64bit. Same with SM 2.35 and 2.10 But currently I can't tell whether that might be a bug or not