The icons for my EXE and XML files have suddenly vanished and now reverted to Windows defaults. In Windows Explorer, however, they're still as they should be.
Oddly when I click on them, they open as I would expect.
Note that there may be other affected file formats but I haven't spotted them yet.
I'm running the latest version (12.11 x64) on Windows 10 Pro 64-bit. On a (touch wood) stable system.