TextEdit docs opened in MacOS 12.6 Monterey are garbled
All TextEdit documents created in earlier MacOS's (High Sierra and earlier) open as badly garbled documents in my newly-installed Monterey OS's version of TextEdit. None of the obvious Options in the Open menu works, nor does Reset Prefs. I can still open those docs just fine in the High Sierra and El Capitan versions of TextEdit on older computers.
MacBook Pro 15″, macOS 12.6