UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36

Example URL:
https://docs.google.com

Steps to reproduce the problem:
Hi, I work on Visual Studio Code and I'm trying really hard to build a Screen Reader friendly editor. This is an issue that affects our users and it affects Google's customers too.

Here are two ways to reproduce. They both assume NVDA is running and the NVDA Speech Viewer can be used to verify. I have tested with NVDA_2017.1, but it occurs in older NVDA versions too:

a). Reproducible steps in Google Docs
b). Reproducible steps using a simple <textarea> in a sample html page

a). Reproducible steps in Google Docs
1. Go to docs.google.com and create a new document
2. Set the content to the following text:

Hello world, how are you doing on line 1
Hello world, how are you doing on line 2
Hello world, how are you doing on line 3
Hello world, how are you doing on line 4
Hello world, how are you doing on line 5
Hello world, how are you doing on line 6
Hello world, how are you doing on line 7
Hello world, how are you doing on line 8

3. Enable Accessibility via Shift+Alt+Z .
4. Go to Accessibility > Settings > Enable Braille Support.
5. Place cursor on first line, at the beginning.
6. Press arrow down or arrow right multiple times, in a calm fashion (i.e. press the key + wait for the text to appear in the Speech Viewer).
7. Observe: every now and then, a line is read twice (more rarely) or a character is read twice (more often). e.g.: H, e, e, l, o etc.
8. If you have any trouble reproducing, simply increase the document or the line size.

b). Reproducible steps using a simple <textarea> in a sample html page
1. Open the attached sample that contains a textarea with a small chunk (60KB) of text.
2. Place cursor on first line, at the beginning.
3. Press arrow down or arrow right multiple times, in a calm fashion (i.e. press the key + wait for the text to appear in the Speech Viewer).
4. Observe: every now and then, a line is read twice (more rarely) or a character is read twice (more often).
5. If you have any trouble reproducing, simply increase the length of the text inside the textarea.

The simple <textarea> sample html page works as expected in Firefox.

VS Code issue: https://github.com/Microsoft/vscode/issues/26730

What is the expected behavior?

What went wrong?
See above

Does it occur on multiple sites: Yes

Is it a problem with a plugin? No 

Did this work before? N/A 

Does this work in other browsers? Yes

Chrome version: 58.0.3029.110  Channel: stable
OS Version: 10.0
Flash Version:
 

Deleted: repro.html 62.4 KB

repro.html 62.4 KB View Download