Update: based on the debug log Janet sent me (without going into details):
- Janet is using Microsoft 365 Version 2203 (latest public release/build 15028).
- Too early to tell, but the problem may actually lie with the way Janet moves to the next line without realizing the formatting is on. For example, after enabling boldface she moves to the end of the line, then presses Enter to move to the next line. This actually does not disable formatting such as boldface because it will carry over to subsequent lines. The user MUST turn off one or more formatting commands before moving to the next line in order to not get characters bolded/underlined/italicized, etc.
- As Brian points out and confirmed by folks using/subscribed to it, Microsoft 365 releases since 2016 are versioned 16.0. The "real" development takes place in Microsoft 365 with perpetual releases such as 2019 and 2021 being a snapshot that will be maintained for several years. Think of it a somewhat similar to Windows 10 public releases versus long-term servicing channel (LTSC) versions where LTSC releases take a snapshot of the latest Windows 10/11 happenings every few years.
Therefore if my diagnosis is indeed correct, then this issue is something to be discussed on a Office mailing list and is not necessarily a screen reader problem that will be fixed by add-ons.