Thank you for writing and for your request.
I would like to start with clarifying that Microsoft did not provide good support for CodedUI for third party controls and we do our best to provide such support when possible. Unfortunately, Microsoft relies on the same mechanism (MSAA) in the controls which are already used from Windows Narrators (Narrator, JAWS and more) and turning on by default this property will greatly affect them and every developer which use our controls should set explicitly this property to false
in order to provide proper narrator support on the client machines.
For this reason we decided to set this property by default to false
DevCraft Q1'14 is here! Join the free online conference to see how this release solves your top-5 .NET challenges. Reserve your seat now!