Steps to reproduce:

1. Open Calc.
2. Select a1 through a3.
3. Choose Format - Merge Cells - Merge Cells.
4. Move to cell a1.

Actual behavior:

NVDA reports: a1

Expected behavior:

NVDA reports: a1 through a3

System configuration:

NVDA Installed/portable/running from source:

Installed.

NVDA version:

2018.4.1

Windows version:

6.1.7601 service pack 1

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

LibreOffice 6.1.3.2

Other questions:

Does the issue still occur after restarting your PC?

Yes.

Have you tried any other versions of NVDA?

NO.