I installed the Mathematica 13.2 in my new computer, everything worked well excepted that the shortcuts for typing the subscripts "ctrl+ _" doesn't work. I tested that the "ctrl" and "-" key work well. Now if I want to type subscript, I need type superscript first and then use "ctrl+%" to generate the subscripts. I have checked the file KeyEventTranslations.tr
and I think the settings should be right:
(* Typesetting input *)
Item[KeyEvent["6", Modifiers -> {Control}], "Superscript"],
Item[KeyEvent["Keypad6", Modifiers -> {Control}], "Superscript"],
Item[KeyEvent["^", Modifiers -> {Control}], "Superscript"],
Item[KeyEvent["-", Modifiers -> {Control}], "Subscript"],
Item[KeyEvent["KeypadSubtract", Modifiers -> {Control}], "Subscript"],
Item[KeyEvent["_", Modifiers ->{Control}], "Subscript"],