Steps to reproduce:

• Press NVDA+V to ensure screen layout is off.
• On a webpage, press 2 times NVDA+F
• Press many times down arrow
• Press NVDA+V to enable screen layout
• Press up/downArrows again to explore the lines

Actual behavior:

Every other line is empty when screen layout is off.

Expected behavior:

The content should not contain empty lines between useful lines; screen layout should not have any impact here.

NVDA logs, crash dumps and other attachments:

N/A

System configuration

NVDA installed/portable/running from source:

Installed

NVDA version:

Version : source-master-c8a847b (2024.4.0.0)

Windows version:

Windows 10

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

N/A

Other information about your system:

N/A

Other questions

Does the issue still occur after restarting your computer?

Not tested, probably yes

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

2024.3rc1 is OK, i.e. no such 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, probably unrelated.

Notes

This issue is very likely introduced by #16369. Cc @XLTechie.
Thus #12004 has been reintroduced unfortunately.