Steps to reproduce:

In Internet Explorer, open this file: ExEmphasisAndMarkedText.html.txt after having removed its txt extension.

1. In Document formatting settings, disable Emphasis and Marked
   Then read the page.
2. In Document formatting settings, disable Emphasis and enable Marked
   Then read the page.
3. In Document formatting settings, enable Emphasis and disable Marked
   Then read the page.

Actual behavior:

1. No formatting info read in the 3 first lines.
2. The words "Reef" and "Quentin" are read respectively as emphasized and marked.
3. No formatting info read in the 3 first lines.

Expected behavior:

1. No formatting info read in the 3 first lines (same result).
2. Only "Quentin" is read as marked in the 3 first lines.
3. Only "Reef" is read as emphasized in the 3 first lines.

System configuration

NVDA installed/portable/running from source:

Installed

NVDA version:

2020.3

Windows version:

10

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

Internet Explorer 11

Other information about your system:

Other questions

Does the issue still occur after restarting your computer?

Yes

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

2020.2 has no issue regarding emphasis. This is a regression probably introduced by #11436. Note that reporting of marked content has been introduced only in 2020.3.

If addons are disabled, is your problem still occuring?

No tested.

Did you try to run the COM registry fixing tool in NVDA menu / tools?

No