xcode editor deletes characters on delete press but does not hide the deleted characters in the editor

Hello there. Hope you are doing good 🙂

I am on macOS Catalina 10.15.2 (19C57)

I have a swift file opened in Xcode 11.3 and inside that file when I try to delete a character by pressing the "Delete" key the code look in the editor does not change:

Lets say I have cursor put at the end of "@implementation AppDelegate" code and when I press "Delete" even a couple of times then it still remains the same "@implementation AppDelegate".

But I did check that file content via git and git does show the file content has changed. So something wrong here.

I checked the same with Xcode 10.1 and the same behavior.

Regards.