Docs error - cursor skipping

Docs error - cursor skipping

I'm having a problem in Docs when trying to write.  Every minute or so (or every sentence or two) the cursor skips a letter behind where I'm currently typing, which pushes me back into the word by just one letter.  I know my typing isn't the issue here, no matter how fast, slow or accurately I was typing, the cursor would skip and I'd have to re-correct.