node-id3: Incorrect timestamps on Syncronized lyrics

I used these settings to update syncronizedLyrics on a song.

{
                contentType: TagConstants.SynchronisedLyrics.ContentType.LYRICS,
		language: 'ENG',
		timeStampFormat: TagConstants.TimeStampFormat.MILLISECONDS,
		shortText: 'this is short text',
		synchronisedText: [
			{ text: 'Lyrics line 1', timeStamp: 12.5 },
			{ text: 'Lyrics line 2', timeStamp: 14.5 },
			{ text: 'Lyrics line 3', timeStamp: 16.5 },
			{ text: 'Lyrics line 4', timeStamp: 18.5 },
			{ text: 'Lyrics line 5', timeStamp: 20.5 },
		],
	}

But when I read the same song, I get a different output with incorrect timestamps and the last lyric line missing.

{
        language: "ENG",
        timeStampFormat: 2,
        contentType: 1,
        shortText: "this is short text",
        synchronisedText: [
          {
            text: "Lyrics line 1",
            timeStamp: 4294855680,
          },
          {
            text: "yrics line 2",
            timeStamp: 4294855680,
          },
          {
            text: "yrics line 3",
            timeStamp: 4294855680,
          },
          {
            text: "yrics line 4",
            timeStamp: 4294855680,
          },
        ],
      },