data-instant-mousedown-shortcut breaks bootstrap 3 navbar menus

[PetterS]

If data-instant-mousedown-shortcut is added to the body, bootstrap 3 dropdown menus do not work. This is not fixed by adding data-no-instant to them.

They are a elements with href="#" class="dropdown-toggle" data-toggle="dropdown". If they are made into another element, e.g. button, things work. This is surprising, since adding data-no-instant does not work.

[PetterS]

Adding this in the mousedownShortcutListener function fixes the issue:

    if (!isPreloadable(linkElement)) {
        return;
    }