colorizer bug after move-lines-up into a docstring

After move-lines-up on a python line to move it into a docstring, the syntax coloring does not end properly after the closing quotes of the docstring anymore (everything below gets green).

Before:

        @language python

        def test():

            """ a
            b
            c
            """

            print 1
            print 2

After using move-lines-up on the "print 1" line:

    @language python

    def test():

        """ a
        b
        c
        print 1
        """

        print 2