Only the latest version of the game is fully supported, as it contains all the latest improvements, fixes and changes. If you encountered any issues on an older version of the game, make sure to update it first.
However, if for any reason you wish to revert to an earlier version of the game, here's how you can do it:
To return to the newest version of the game, simply follow the same steps and select None in the BETAS menu.
To return to the newest version of the game, simply follow the same steps and select Disabled in the Beta Channels menu.
On Epic Games Store, it isn't possible to revert to an earlier version of the game. The platform only provides access to the latest available version.