Tried alternate keyboard. Same behavior.

clarification: Tab key will not insert spaces (4) for indentation. I have to copy/paste spaces to indent now.

I've reported this about 3 months ago, as NSOpenPanel() displayed nothing, but acted as if the user pressed cancel. No response. My app is SwiftUI in Xcode 13.3.1 with app targeted for MacOS Monterey 12.3. Just - doesn't - work.

It's sad that SwiftUI doesn't have an equivalent for Open/Save panels. Online docs suggest using Apple's doc interface, but that doesn't apply to all apps. I've had this issue for ≈18 months, still unresolved.