Accessibility: Screen readers (Narrator, JAWS, NVDA) read aloud "DesktopChildSiteBridge" on XAML Windows

[rmlaapl]

TL;DR
Applications that speak out loud what is happening on the screen (for sight-impaired people) appear to use the window's text as the source of words that they speak whenever Automation/Accessibility properties are not set.

The following is a problem in at least version 1.4.2312190001 of Windows App SDK: an SDK-created window with the class name "Microsoft.UI.Content.ContentWindowSiteBridge" has its text set (i.e. WM_SETTEXT) to DesktopChildSiteBridge. This causes a screen reader to read the title of your top-level XAML window, and then immediately speak that string of words, which would be very disorienting as a person relying on accessibility features.

This is a screenshot from Accessibility Insights, highlighting the window in question:

The fix for this is extremely simple: just don't set the window text on that ContentWindowSiteBridge, and all will be well :)

I noticed this was/is also an issue in MAUI

In our application, I fixed it with some old school Win32: EnumChildWindows looking for that class name, and if found, set its text to an empty string.

[bpulliam]

not a duplicate of #7853. that was fixed in 1.3. internal bug