Steps to reproduce:

• set the cursor or virtual cursor on a text having formatting information such as text in a web page
• Press two times quickly NVDA+F to get formatting info in a browseable window
• Examine the formatting information line by line by pressing down arrow many times

Extra:

• Open the Python console and type:
  import ui;ui.browseableMessage("Hello\nworld")

Actual behavior:

NVDA reads "blank" one line in two in formatting info as well as in "Hello world" message.

Expected behavior:

NVDA should not read "blank" between formatting information line nor in "Hello world" message since:

• As a user, we do not need blank lines to examine a text such as formatting information
• Visually, there is no blank line
• The source string of the "Hello world" message does not contain any blank line.

System configuration

NVDA installed/portable/running from source:

all

NVDA version:

2020.4beta4

Windows version:

10

Name and version of other software in use when reproducing the issue:

N/A

Other information about your system:

N/A

Other questions

Does the issue still occur after restarting your computer?

Yes

Have you tried any other versions of NVDA? If so, please report their behaviors.

Yes, 2020.3: same issue.
It seems to me that this issue has always been there.

If addons are disabled, is your problem still occuring?

Yes

Did you try to run the COM registry fixing tool in NVDA menu / tools?

No