i'm using an 1+ year old mac mini, and firefox is up to date (ver. 48.0). believe this problem usually happens after certain firefox updates download. don't know what is causing this, but on an ebay seller's page, there's supposed to be a dropdown box below the bid and/or add to cart and/or buy it now box(s) that gives me access to private lists i've created, so that i can watch specific things, e.g., books on yosemite, plus the dropdown box contains the options of watching an item in ebay's watch list or wish list. when the problem reappears - as it does every few weeks or months - the dropdown box disappears, to be replaced with only the option of watching the item in ebay's watch list which is limited to only 200 items. ebay says it's not something they are doing on their end. this is beyond frustrating. i've deleted browsing & download history, form&search history, cache & active logins to no avail. what do i do to fix this. i don't want to give up using firefox.