Incorrect behavior of "review bottom line" in Windows Console

[codeofdusk]

Steps to reproduce:

1. Open Command Prompt.
2. Invoke "review bottom line" (desktop layout: shift+numpad 9).

Actual behavior:

On Windows 10 1803, the last line of output is read as expected, but the review cursor is placed out of bounds: after invoking "review bottom line", blank lines at the end of the output become accessible that previously weren't.

On Windows 10 1903, NVDA says blank. "read current line" also reports blank, but attempting to review the next line says "bottom" followed by the last line of output.

Expected behavior:

The last line of output is reported and the review cursor is placed there. The review cursor stays within the console bounds (i.e. no blank lines are exposed when the script is invoked).

System configuration

NVDA installed/portable/running from source:

Installed and source.

NVDA version:

Latest master branch.

Windows version:

Windows 10 version 1803 and 1903.

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

Windows Console (Command Prompt)

Other information about your system:

Other questions

Does the issue still occur after restarting your PC?

Yes.

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

No.

[codeofdusk]

This issue is likely caused by an unreliable or incorrect lastVisiRange. See the initialization for a ConsoleUIATextInfo at POSITION_LAST (around line 35 of NVDAObjects/UIA/winConsoleUIA.py).

Cc @feerrenrut @LeonarddeR @michaelDCurran