I’m sharing this answer since I was not able to find information about this anywhere else and want to share the information in case someone is experiencing the same.
Issue:
Every time a comma , was expected to show on the screen, instead a “Á” Latin symbol inside a rounded square was replacing it.
In my case it was due to the Editor Locale being in Spanish instead of English.
Solution:
1- Go to Edit menu, Editor Preferences.
2- Click on General > Region & Language.
3- Choose English from the Editor Locale dropdown.