edit text problem

[William276192849nda]

In a text box in edit mode, I want to correct some strange overlapping text in a pdf file to “one delightful”:

…when I make correction, I get this:

My computer is a Mac Air (MacOS current version). I can get back to the original with CNTL-Z command.

[Amal.]

Locking as duplicate https://community.adobe.com/t5/acrobat-discussions/edit-text-fails/td-p/13429401