User Agent: Mozilla/5.0 (Windows NT 6.0; rv:42.0) Gecko/20100101 Firefox/42.0 Build ID: 20151029151421 Steps to reproduce: Tried to drag&drop several marked elements out of "organize bookmarks" into a folder outside Firefox. No elements were copied. (But that works under WinXP) However, d&d with a single element works. Trying to d&d folders doesn't work at all.... Actual results: No elements were copied, inspite of showing the "+" sign resp. the "link" symbol Expected results: Several marked elements resp. folders with their contents shold be copied into an external folder.
Is it reproducible: 1) in safe mode: https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode 2) with a fresh profile: https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles
1) It is reproducible in safe mode 2) It is reproducible with a fresh profile