For those who want to play MUA RE series with Keyboard since the current patch removes the auto tapping when just pressing a single button, when it comes to Tab & L Ctrl buttons, whatever you do: Do NOT remove & press those two buttons during a custom configurations, the effects are:
** Cannot change to Other settings in Option, & cannot change to other heroes' details during Hero Details/Character Select
** For changing to other setting in Option, we have no choice to use mouse
** If you want to use simple keyboard button using Tab & L Ctrl again, you might have to sacrifice your save game & restart the game
** However, the easier way is to exit the game via Alt+F4. I gotta bad feeling when exit to main menu without saving the Option settings