Steps to reproduce:

1. Open this example on a windows FireFox browser tab, https://jsfiddle.net/AnthonyYY/xpvt214o/952936/
2. Open NVDA and open its speech viewer.
3. in the JSFiddle's result panel, use keydown tab twice to navigate to the next menu-item.
4. hit enter key to activate to target menu item.
5. check the speech viewer

Actual behavior:

NVDA reads aria-current menu item's current status twice.

Expected behavior:

when hitting enter key to activate a menu-item. clicked menu item's current status is report once only.

System configuration:

NVDA Installed/portable/running from source:

Installed

NVDA version:

2018.3.2

Windows version:

Window 10 Pro

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

FireFox: version 63.0.1 (32)

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?

Yes