Steps to reproduce:

    Edit any article.
    Move the cursor to the very beginning of a paragraph.
    Start typing a word that starts with the same letter as the first word of that paragraph.

Result: After typing the first letter, the cursor moves left one character, making the subsequent entry appear to the left of the intended first letter.

I’m using iOS 14.6 (18F72) and version 6.8.1 (1815) of the mobile app.