I'm running Windows10 2004, build 19041.450 as well as NVDA 2020.2 and Thunderbird 78.2.1.
In one of my inboxes, NVDA is announcing 0 in the message list before each message subject is read.
This started happening all of a sudden recently, although I have no idea how.
This also doesn't happen in any other folders.
I'm just wondering if anyone has any ideas on what could be causing this?