The info.magnolia.ui.contentapp.action.clipboard.JcrClipboard has been updated to paste items into the destination node only if all the source items can be copied into the destination

@Override
public boolean canPasteInto(final Item destination) {
    if (!destination.isNode()) {
        return false;
    }
    return items.stream().allMatch(item -> canPasteInto(item, destination));
}

The same behavior should be applied to other implementations of `info.magnolia.ui.framework.ContentClipboard`