Steps to reproduce:

Open https://codepen.io/jnurthen/full/qBErmdB
The page has a link followed by 2 progress bars.
The first is Labelled Loading.... and the Valuetext is set to 50%
The second is also Labelled Loading but has no valuetext (or valuenow)

Actual behavior:

NVDA reads the indeterminate progressbar as "half-checked":
Speech: progress bar half checked 0
Braille: ⣏⣸⣹ prgbar 0 frame end

Expected behavior:

A better term than half-checked should be used for an indeterminate progress bar

System configuration

NVDA installed/portable/running from source:

Installed

NVDA version:

2019.2.1

Windows version:

Windows 10 19013.1122

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

FF 71.0
Chrome 79.0.3945.88

Other information about your system:

Other questions

Does the issue still occur after restarting your PC?

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