Why is this happening?

Question

Tapping any character after pressing TWO OR MORE numbers changes the text.
https://code.sololearn.com/WOpAItHMbXRc/?ref=app

Answer 1

Hmm... I spammed numbers and then typed some random letters in, and it worked fine for me! I’m using the SL iOS app.

Answer 2

It is because of mobile keyboards autocorrecting the text. Even putting a space bar thus ruins things.

Answer 3

Arnesh okay, that sounds about right.