I've published FS-UAE & Launcher 3.1.66 ->
https://fs-uae.net/download
Main changed are:
- Updated bundled SDL version to 2.0.18
- Updated controller mappings
In particular, this should fix an issue with mouse cursor confinement on Windows, but the update to SDL 2.0.18 will probably bring with it other improvements as well, including improved controller support. Hopefully without introducing any issues.