Attach (recommended) or Link to PDF file here:
[298865.pdf](https://github.com/mozilla/pdf.js/files/2753236/298865.pdf)


Configuration:
- Web browser and its version:chrome 71.0.3578.98
- Operating system and its version:mac os 10.12.6
- PDF.js version:I use online demo in github
- Is a browser extension:no

Steps to reproduce the problem:
1. search "中华" or "电力" or so on,the highlight position is not right

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/10000986/51087378-7eff5100-178d-11e9-991a-005d77b82f31.png)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/10000986/51087374-6ee77180-178d-11e9-9707-281924f95fd0.png)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):
https://mozilla.github.io/pdf.js/web/viewer.html
expect(pdfPage.rotate).toEqual(0);
      expect(fetches).toBeGreaterThan(2);
      await loadingTask.destroy();
    });
    it("should fetch document info and page using range and streaming", async function () {
      const initialDataLength = 4000;
      let fetches = 0;
      const data = await dataPromise;
      const initialData = data.subarray(0, initialDataLength);
      const transport = new PDFDataRangeTransport(data.length, initialData);
      transport.requestDataRange = function (begin, end) {
        fetches++;
        if (fetches === 1) {
          
          transport.onDataProgressiveRead(data.subarray(initialDataLength));
        }
        waitSome(function () {
          transport.onDataRange(begin, data.subarray(begin, end));
        });
      };
      const loadingTask = getDocument(transport);
      const pdfDocument = await loadingTask.promise;
      expect(pdfDocument.numPages).toEqual(14);
      const pdfPage = await pdfDocument.getPage(10);
      expect(pdfPage.rotate).toEqual(0);
      expect(fetches).toEqual(1);
      await new Promise(resolve => {
        waitSome(resolve);
      });
      await loadingTask.destroy();