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Regression observed since 2023.2: NVDA freezes when switching windows #15920

@cary-rowen

Description

@cary-rowen

Steps to reproduce:

There may not be exact steps to reproduce at this time.
Switching between windows that contain editable controls, such as Notepad++ or Notepad, can easily trigger freezing.
Restarting NVDA by pressing Ctrl+Alt+N is also very slow in these applications, taking 5 to 10 seconds.

Actual behavior:

NVDA freezes and becomes unresponsive for a long time.

Expected behavior:

NVDA should not freeze like it did in 2023.1.

NVDA logs, crash dumps and other attachments:

freeze.log

System configuration

NVDA installed/portable/running from source:

Installed

NVDA version:

2023.3,2023.2 and Alpha

Windows version:

Windows version: Windows 11 23H2 (10.0.22631) workstation AMD64

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

NVDA

Other information about your system:

None

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.

2023.1 works as expected

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?

Yes

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    bug/freezep2https://github.com/nvaccess/nvda/blob/master/projectDocs/issues/triage.md#prioritytriagedHas been triaged, issue is waiting for implementation.

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