On my other laptop I was able to drag shortcut-icons to toolbar. On this new laptop, on latest FF version, it refuses to work. Rather sometimes turns into another open Tab?? Spent a LONG time trying to find answer to this - no dice.
All details are in my above Question.
I can't begin to tell you how frustrating it is to get the answer to this Q.
Check that you still have the "Bookmarks Toolbar items" placed on the Bookmarks Toolbar
If the menu bar is hidden then press F10 or hold down the Alt key, that should make the "Menu Bar" appear
Make sure that toolbars like the "Navigation Toolbar" and the "Bookmarks Toolbar" are visible: "View > Toolbars"
- Open the Customize window via "View > Toolbars > Customize" or via "Firefox > Options > Toolbar Layout" and check that the "Bookmarks Toolbar items" is on the Bookmarks Toolbar
- If the "Bookmarks Toolbar items" is not on the Bookmarks Toolbar then drag it back from the toolbar palette in the customize window to the Bookmarks Toolbar
- If you do not see the "Bookmarks Toolbar items" or other items that are missing in the toolbar palette or on a toolbar then click the "Restore Default Set" button