Steps to reproduce:

1. First, set symbol level of "\" to have it reported (i.e., None);
2. open a dictionary and create something like "foo" replaced by "foo bar" (note the space in replacement);
3. read text: "test of foo".

Actual behavior:

Voice says:
"test of foo\bar"

Expected behavior:

Voice should say:
"test of foo bar"
without any "\".

System configuration

NVDA installed/portable/running from source:

Installed and running from source.

NVDA version:

NVDA alpha-27727,86e93666 (installed).

Windows version:

Windows 10 22H2 Build 19045.2604 64-bit.

Other information about your system:

Tested with Eloquence and Microsoft OneCore (Elsa) synthesizers.

Other questions

Does the issue still occur after restarting your computer?

Not tested.

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

2023.1beta1 seems to not have this issue.

If NVDA add-ons are disabled, is your problem still occurring?

Yes.

Does the issue still occur after you run the COM Registration Fixing Tool in NVDA's tools menu?

Not tested.