Sometimes when I type, I'll go back and add something to whatever I was writing and sometimes it'll delete what was before it.
For example: If I was writing something like "The cat sat on a mat." and I wanted to put 'quietly' before 'sat' then once I start adding 'quietly', it'll start looking like "The cat quietlya mat."
It's kind of confusing but does anybody know why that happens and how to fix it?