Steps to reproduce:

Using alpha-20175,9967903a or later.

1. Open Cancellable speech #10885 with Chrome
2. Jump by heading with 'h' until you get to the heading "Description of how this pull request fixes the issue"
3. Start say-all (NVDA+down arrow)

The problem does not require changing the Attempt to cancel speech for expired focus events setting.

Actual behavior:

After a few lines, the following is read twice:
"Tested moving through emails (and across table boundaries) in Gmail"

Expected behavior:

The line should be read once.

System configuration

NVDA installed/portable/running from source:

Installed.

NVDA version:

Alpha build, post #10885 merge: alpha-20175,9967903a
Does not repro with prior alpha: alpha-20168,1cf36fbe

Windows version:

Win 10: 1909

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

Chrome 81

Other questions

If addons are disabled, is your problem still occuring?

No addons