Not sure if the Cheat Search Issue was fixed for the Switch/Vita/3DS(??) Builds. Issue is, when you are Searching for Cheats, you can not get Past the 3rd Search. It stays locked with #### Results.
https://www.libretro.com/index.php/retroarch-1-7-9-released/
https://www.libretro.com/index.php/retroarch-1-7-9-released/