Steps to reproduce:

1. Open the Braille Viewer in NVDA.
2. Check the "hover for cell routing" option in the Braille Viewer settings.
3. Move the mouse pointer over the braille cells displayed in the Braille Viewer.

Actual behavior:

When moving the mouse pointer over the braille cells in the Braille Viewer with the "hover for cell routing" option checked, cell routing does not occur as expected. Instead, an error sound is played.

Expected behavior:

When the "hover for cell routing" option is checked and the mouse pointer is moved over the braille cells in the Braille Viewer, the cells should change color to indicate interaction. Shortly thereafter, cell routing should be executed as expected, without any error sounds.

NVDA logs, crash dumps and other attachments:

A log file detailing the issue is attached for further analysis.

System configuration

NVDA installed/portable/running from source:

Portable version

NVDA version:

Alpha-30253,57f468fc

Windows version:

Windows 11 23H2 (10.0.22631) workstation, AMD64

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

Other information about your system:

Other questions

Does the issue still occur after restarting your computer?

Yes, the problem persists even after restarting the computer.

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

The issue does not occur in NVDA version 2023.3, where it works as expected.

If NVDA add-ons are disabled, is your problem still occurring?

Yes, the problem occurs even with all NVDA add-ons disabled.

Does the issue still occur after you run the COM Registration Fixing Tool in NVDA's tools menu?

Yes, running the COM Registration Fixing Tool does not resolve the issue.

nvda231209.log