Testing UIA repro for problems
In this minimal UIA app, the window is treated as one UIA fragment, which has the CheckBox role and provides the Toggle pattern. Its state is always indeterminate. When hovering the cursor over it with NVDA active, I would expect to hear something like "Fragment root - checkbox - indeterminate", or anything to indicate that the fragment is a checkbox and has a toggled state. Instead, I only hear "Fragment root" (the name of the fragment).